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Abscissa
- Abscissa - math word definition
- Coordinates of a point
Acceleration
- Acceleration - Math word definition - Math Open Reference
- Calculus - Equations of Motion
Accumulation
- Accumulation - Math word definition - Math Open Reference
- Calculus - Accumulation Functions
Acute
- Acute - math word definition
- Acute Angle definition
- Acute triangle definition
Adjacent
- Adjacent - math word definition
- Adjacent Angles definition
- Adjacent arcs definition
- Adjacent sides definition
Algorithm
- Algorithm definition
- Circle and ellipse drawing algorithm
- Polygon area algorithm
Alternate angle
- Alternate angle - math word definition
- Alternate Exterior Angles definition
- Alternate Interior Angles definition
Alternating
- Alternating - Math word definition - Math Open Reference
- Calculus - Alternating Series Test
Altitude
- Altitude - math word definition
- Area of a triangle (conventional method)
- Trapezoid and its properties. (Coordinate Geometry)
- Triangle definition and properties
Analysis
- Analysis - Math word definition - Math Open Reference
- Calculus - Basic curve analysis
- Calculus - Curve Analysis - Global Extrema
- Calculus - Curve analysis - special cases
Angle
- Angle - Math word definition
- Acute Angle definition
- Adjacent Angles definition
- Alternate Exterior Angles definition
- Alternate Interior Angles definition
- Angle bisector definition
- Angle definition and properties (Trigonometry)
- Angle inscribed in a semicircle
- Angle measure of an arc
- Angle Quiz 1
- Arc Peripheral Angle
- Central angle of a circle
- Central Angle Theorem
- Complementary Angles definition
- Congruent Angles
- Constructing 75, 105, 120, 135, 150 degree angles and more
- Corresponding Angles definition
- Cosine - math word definition
- Coterminal - math word definition
- Degrees as a unit of angle measure
- Exterior Angles - math word definition
- Exterior Angles of a Transversal definition
- Full Angle - An angle with a measure of 360 deg
- How to construct (draw) a 30 degree angle with compass and straightedge or ruler
- How to construct (draw) a 45 degree angle with compass and straightedge or ruler
- How to construct (draw) a 60 degree angle with compass and straightedge or ruler
- How to construct (draw) a 90 degree angle with compass and straightedge or ruler
- How to copy an angle with compass and straightedge or ruler
- How to use a protractor
- How to use a protractor to draw an angle
- Included angle definition
- Initial side - math word definition - Trigonometry
- Inscribed angle of a circle
- Interior / exterior angles of a polygon
- Interior angles of a parallelogram
- Interior Angles of a transversal definition
- Interior of an angle definition
- Intersecting Secant Angles Theorem
- Linear Pair - math word definition
- Obtuse Angle definition
- Quadrantal angle - math word definition - Trigonometry
- Radian - math word definition
- Reflex Angle definition
- Relationship of side lengths and angles of a triangle
- Right Angle - math word definition
- Standard position of an angle definition - Trigonometry
- Straight Angle definition
- Subtended angle definition
- Supplementary Angles definition
- Terminal side definition - Trigonometry
- The sine function - math word definition
- The tangent function in right triangles - Trigonometry
- Triangle exterior angles definition
- Vertical Angles definition
Annulus
- Annulus - Math word definition
- Area of an annulus
Antiderivative
- Antiderivative - Math word definition - Math Open Reference
- Calculus - Antiderivatives from Slope
- Calculus - Basic Antiderivatives
- Calculus - Functions defined using integrals
Apothem
- Apothem of a polygon
Arc
- Arc - Math word definition
- Adjacent arcs definition
- Angle measure of an arc
- Arc Length definition
- Arc Peripheral Angle
- Calculus - Arc Length
- Intercepted arc
- Major and Minor Arcs
- Radius of an Arc or Segment
Arc length
- Arc-length - Math word definition - Math Open Reference
- Calculus - Arc Length
Area
- Area - math word definition
- Area enclosed by a circle
- Area enclosed by an ellipse
- Area of a circle segment
- Area of a Kite
- Area of a parallelogram. Definition and formula
- Area of a rectangle. Definition and formula
- Area of a sector of a circle
- Area of a square. Definition and formula
- Area of a trapezoid. Definition and formula
- Area of a triangle (conventional method)
- Area of a triangle (Coordinate Geometry)
- Area of a triangle (Side-angle-side method)
- Area of a triangle using the box method (Coordinate Geometry)
- Area of an annulus
- Area of an equilateral triangle
- Area of an Irregular Polygon
- Area of any polygon (Coordinate Geometry)
- Calculus - Areas By Slicing
- Calculus - Polar Area
- Derivation of the formula for the area of a cone
- Heron's formula - triangle area given three sides
- Polygon area algorithm
- Polygon area calculator
- Rectangle area and perimeter. (Coordinate Geometry)
- Regular polygon area formula
- Relationship of area and perimeter of a triangle
- Rhombus area formula
- Square and its properties. (Coordinate Geometry)
- Surface area of a cube
- Surface area of a cylinder
- Surface area of a pyramid
- Surface area of a right cone
- Surface area of a sphere
- Trapezoid area and perimeter. (Coordinate Geometry)
- Triangle similarity, ratios of area
- Video: Example - finding area of a trapezoid given bases, legs and altitude
- Video: Example - finding area of a trapezoid given bases, one leg and two angles
- Video: How the formula for the area of a trapezoid is derived
- Video: Video: Example - finding a base of a trapezoid given area, one base and altitude
Average
- Average - Math word definition - Math Open Reference
- Calculus - Average Value
Avergae
- Avergae - Math word definition - Math Open Reference
- Calculus -Average velocity and speed
Axis
- Axis, axes - Math word definition
- Introduction to Coordinate Geometry
- Major / minor axis of an ellipse
- Semi-major / semi-minor axis of an ellipse
- The Coordinate Plane
Base
- Base - Math word definition
- Area of a triangle (conventional method)
- Triangle definition and properties
Biography
- Biography - Math word definition - Math Open Reference
- Biography of Heron
- Biography of Pythagoras - math word definition
- Biography of Thales - math word definition
- Euclid - math word definition
Bisector
- Bisector - math word definition
- Angle bisector definition
- How to bisect a line with compass and straightedge or ruler
- How to bisect an angle with compass and straightedge or ruler
- Line segment bisector definition
- Perpendicular bisector definition
Bounds
- Bounds - Math word definition - Math Open Reference
- Circumscribed rectangle, bounding box. (Coordinate Geometry)
Box
- Box - Math word definition - Math Open Reference
- Area of a triangle using the box method (Coordinate Geometry)
- Calculus - Maximizing volume
- Circumscribed rectangle, bounding box. (Coordinate Geometry)
Calculator
- Math / scientific calculator similar to those from TI, Casio, HP etc
- Graphical Function Explorer grapher (GFE)
- Math / scientific calculator instructions
- Polygon area calculator
Calculus
- Calculus - Math word definition - Math Open Reference
- Calculus - Fundamental Theorem of Calculus
- Calculus - Second Fundamental Theorem of Calculus
Center
- Center - math word definition
- Center of a Polygon
- Finding the center of a circle (with any right-angled object)
- Finding the center of a circle with compass and straightedge or ruler
- Points of concurrency
Central angle
- Central angle - math word definition
- Central angle of a circle
- Central Angle of a Polygon
- Central Angle Theorem
Centroid
- Centroid - math word definition
- Euler line
- How to construct (draw) the centroid of a triangle with compass and straightedge or ruler
- Median of a triangle - math word definition
- Triangle Centers Overview
- Triangle centroid definition
Chain rule
- Chain-rule - Math word definition - Math Open Reference
- Calculus - Chain Rule
Chord
- Chord - Math word definition
- Intersecting Chord Theorem
Circle
- Circle - Math word definition
- Angle inscribed in a semicircle
- Annulus - Math word definition
- Arc - Math word definition
- Area enclosed by a circle
- Area of a circle segment
- Area of a sector of a circle
- Area of an annulus
- Basic Equation of a Circle
- Central angle of a circle
- Chord - Math word definition
- Circle and ellipse drawing algorithm
- Circumference (perimeter) of a circle definition
- Concentric - Math word definition
- Diameter - math word definition
- Finding the center of a circle (with any right-angled object)
- Finding the center of a circle with compass and straightedge or ruler
- General form of Equation of a Circle
- How to construct (draw) a circle through the 3 vertices of a triangle with compass and straightedge or ruler
- How to construct (draw) a tangent to a circle
- How to construct (draw) tangents to a circle through an external point
- How to construct (draw) a circle through 3 points with compass and straightedge or ruler
- Incircle
- Inscribed angle of a circle
- Intersecting Chord Theorem
- Intersecting Secant Theorem
- Parametric Equation of a Circle
- Radius of a circle - math word definition
- Secant of a circle definition
- Sector definition
- Segment of a Circle
- Semicircle - math word definition
- Tangent to a circle definition
- Thales theorem
Circumcenter
- Circumcenter - math word definition
- Circumcircle of a Triangle
- Euler line
- How to construct (draw) circumcenter of a triangle with compass and straightedge or ruler
- Triangle Centers Overview
- Triangle Circumcenter definition
Circumcircle
- Circumcircle - math word definition
- Circumcircle of a Regular Polygon
- Circumcircle of a Triangle
- How to construct (draw) a circle through the 3 vertices of a triangle with compass and straightedge or ruler
- How to construct (draw) a circle through 3 points with compass and straightedge or ruler
- Radius of a Regular Polygon
Circumference
- Circumference (perimeter) of a circle definition
- Perimeter of an Ellipse
Circumradius
- Circumradius - math word definition
- Circumcircle of a Triangle
- Radius of a Regular Polygon
Circumscribed
- Circumscribed - math word definition
- Circumcircle of a Regular Polygon
- Circumcircle of a Triangle
- Circumscribed rectangle, bounding box. (Coordinate Geometry)
- How to construct (draw) a circle through the 3 vertices of a triangle with compass and straightedge or ruler
- How to construct (draw) a circle through 3 points with compass and straightedge or ruler
Classification
- Classification - math word definition
- Classification of triangles
Classify
- Classify - math word definition
- Classification of triangles
Collinear
- Collinear - Math word definition
Comparison
- Comparison - Math word definition - Math Open Reference
- Calculus - Comparison Test
Compass
- Compass - math word definition
- Constructing 75, 105, 120, 135, 150 degree angles and more
- Constructing a regular pentagon inscribed in a circle
- Constructions Introduction. Drawing shapes with compass and straightedge
- Copying a line segment with compass and straightedge or ruler
- Dividing a line segment into N equal parts with compass and straightedge or ruler
- Finding the center of a circle with compass and straightedge or ruler
- How to bisect a line with compass and straightedge or ruler
- How to bisect an angle with compass and straightedge or ruler
- How to construct (draw) a 30 degree angle with compass and straightedge or ruler
- How to construct (draw) a 45 degree angle with compass and straightedge or ruler
- How to construct (draw) a 60 degree angle with compass and straightedge or ruler
- How to construct (draw) a 90 degree angle with compass and straightedge or ruler
- How to construct (draw) a circle through the 3 vertices of a triangle with compass and straightedge or ruler
- How to construct (draw) a parallel through a point with compass and straightedge or ruler
- How to construct (draw) a perpendicular at a point on a line
- How to construct (draw) a perpendicular at the end of a ray with compass and straightedge or ruler
- How to construct (draw) a perpendicular from a line through a point
- How to construct (draw) a tangent to a circle
- How to construct (draw) an equilateral triangle with compass and straightedge or ruler
- How to construct (draw) circumcenter of a triangle with compass and straightedge or ruler
- How to construct (draw) tangents to a circle through an external point
- How to construct (draw) the incircle of a triangle with compass and straightedge or ruler
- How to construct (draw) the centroid of a triangle with compass and straightedge or ruler
- How to construct (draw) the incenter of a triangle with compass and straightedge or ruler
- How to construct (draw) the medians of a triangle
- How to construct (draw) the orthocenter of a triangle
- How to construct (draw) a 30-60-90 triangle with compass and straightedge or ruler
- How to construct (draw) a circle through 3 points with compass and straightedge or ruler
- How to construct (draw) a parallel through a point with compass and straightedge or ruler (rhombus method)
- How to construct (draw) a regular hexagon given one side with compass and straightedge or ruler
- How to construct (draw) a regular hexagon inscribed in a circle with compass and straightedge or ruler
- How to construct (draw) an isosceles triangle given base and a side
- How to construct (draw) an isosceles triangle given base and altitude with compass and straightedge or ruler
- How to copy an angle with compass and straightedge or ruler
- Video: How to construct (draw) a perpendicular from a line through a point
Complement
- Complement - math word definition
Complementary
- Complementary - math word definition
- Complementary Angles definition
Complex number
- Complex numbers - animated definition
- Imaginary number - math word definition
- Real number - math word definition
- The letter i - math word definition
- The letter j - math word definition
Composition
- Composition - Math word definition - Math Open Reference
- Calculus - Chain Rule
Concave
- Concave - math word definition
- Concave Polygon Definition
Concentric
- Concentric - Math word definition
Concurrent lines
- Concurrent lines - math word definition
- Orthocenter of a triangle - math word definition
- Points of concurrency
- Triangle centroid definition
- Triangle Circumcenter definition
- Triangle incenter, description and properties
Cone
- Cone - Math word definition - Math Open Reference
- Derivation of the formula for the area of a cone
- Slant height of a right cone
- Surface area of a right cone
- Volume of a right cone
Congruent
- Congruent - math word definition
- AAA Doesn't work
- AAS Congruent Triangles
- ASA Congruent Triangles
- Congruent Angles
- Congruent Lines Definition
- Congruent Polygon Tests
- Congruent Polygons
- Congruent Triangles
- HL Congruent Triangles
- SAS Congruent Triangles
- SSA doesn't work
- SSS Congruent Triangles
Construction
- Construction - math word definition
- Constructing 75, 105, 120, 135, 150 degree angles and more
- Constructing a regular pentagon inscribed in a circle
- Constructions Introduction. Drawing shapes with compass and straightedge
- Copying a line segment with compass and straightedge or ruler
- Copying a triangle with compass and straightedge or ruler
- Dividing a line segment into N equal parts with compass and straightedge or ruler
- Finding the foci an ellipse
- Finding the center of a circle (with any right-angled object)
- Finding the center of a circle with compass and straightedge or ruler
- How to bisect a line with compass and straightedge or ruler
- How to bisect an angle with compass and straightedge or ruler
- How to construct (draw) an ellipse
- How to construct (draw) a 30 degree angle with compass and straightedge or ruler
- How to construct (draw) a 45 degree angle with compass and straightedge or ruler
- How to construct (draw) a 60 degree angle with compass and straightedge or ruler
- How to construct (draw) a 90 degree angle with compass and straightedge or ruler
- How to construct (draw) a circle through the 3 vertices of a triangle with compass and straightedge or ruler
- How to construct (draw) a parallel through a point with compass and straightedge or ruler
- How to construct (draw) a perpendicular at a point on a line
- How to construct (draw) a perpendicular at the end of a ray with compass and straightedge or ruler
- How to construct (draw) a perpendicular from a line through a point
- How to construct (draw) a tangent to a circle
- How to construct (draw) a triangle given three sides
- How to construct (draw) a triangle given two angles and the included side
- How to construct (draw) a triangle given two sides and the included angle
- How to construct (draw) an equilateral triangle with compass and straightedge or ruler
- How to construct (draw) circumcenter of a triangle with compass and straightedge or ruler
- How to construct (draw) tangents to a circle through an external point
- How to construct (draw) the incircle of a triangle with compass and straightedge or ruler
- How to construct (draw) the centroid of a triangle with compass and straightedge or ruler
- How to construct (draw) the incenter of a triangle with compass and straightedge or ruler
- How to construct (draw) the medians of a triangle
- How to construct (draw) the orthocenter of a triangle
- How to construct (draw) a 30-60-90 triangle with compass and straightedge or ruler
- How to construct (draw) a circle through 3 points with compass and straightedge or ruler
- How to construct (draw) a parallel through a point with compass and straightedge or ruler (rhombus method)
- How to construct (draw) a regular hexagon given one side with compass and straightedge or ruler
- How to construct (draw) a regular hexagon inscribed in a circle with compass and straightedge or ruler
- How to construct (draw) an isosceles triangle given base and a side
- How to construct (draw) an isosceles triangle given base and altitude with compass and straightedge or ruler
- How to copy an angle with compass and straightedge or ruler
- List of construction worksheets
- Video: How to construct (draw) a perpendicular from a line through a point
Continuity
- Continuity - Math word definition - Math Open Reference
- Calculus - Formal approach to continuity
- Calculus - Informal continuity
Continuous
- Continuous - Math word definition - Math Open Reference
- Calculus - making a function continuous and differentiable
Convergence
- Convergence - Math word definition - Math Open Reference
- Calculus - Ratio Test
Convex
- Convex - math word definition
- Convex Polygon Definition
Coordinates
- Coordinates - math word definition
- Area of any polygon (Coordinate Geometry)
- Coordinates of a point
- Distance between points
- Equation of a line - point - slope form. (Coordinate Geometry)
- Equation of a line - slope and intercept form. (Coordinate Geometry)
- Intercept (b) of a line (Coordinate Geometry)
- Introduction to Coordinate Geometry
- Introduction to Lines in Coordinate Geometry
- Line definition (Coordinate Geometry)
- Line Segment definition (Coordinate Geometry)
- Midpoint Theorem (Coordinate Geometry)
- Origin - math word definition
- Print blank graph paper
- Ray definition (Coordinate Geometry)
- Slope (m) of a line (Coordinate Geometry)
- The Coordinate Plane
Coplanar
- Coplanar - Math word definition
- Introduction to plane geometry
Corresponding
- Corresponding - math word definition
- Corresponding Angles definition
Cos
- COS - Math word definition
- Cosine - math word definition
- Graph of the Cosine function - Trigonometry
- Trigonometry Overview
Cosecant
- Cosecant - math word definition
- Introduction to the 6 trigonometry functions
Cosine
- Cosine - math word definition
- Graph of the Cosine function - Trigonometry
- Introduction to the 6 trigonometry functions
- SOHCAHTOA - math word definition - Trigonometry
- Solving Triangles
- The Law of Cosines
Cot
- COT - Math word definition
Cotangent
- Cotangent - math word definition
- Introduction to the 6 trigonometry functions
Coterminal
- Coterminal - math word definition
Cpctc
- Cpctc - math word definition
Csc
- CSC - Math word definition
Cube
- Cube - math word definition
- Surface area of a cube
- Volume of a cube
Cubic
- Cubic - math word definition
- Cubic curve and graph display
Curve
- Curve - Math word definition - Math Open Reference
- Calculus - Basic curve analysis
- Calculus - Curve Analysis - Global Extrema
- Calculus - Curve analysis - special cases
Cylinder
- Cylinder - math word definition
- Surface area of a cylinder
- Volume of a cylinder
Decagon
- Decagon - math word definition
Decay
- Decay - Math word definition - Math Open Reference
- Calculus - Growth, Decay, and the Logistic Equation
Definite
- Definite - Math word definition - Math Open Reference
- Calculus - Properties of Definite Integrals
Degree
- Degree - math word definition
- Angle definition and properties (Trigonometry)
- Degrees as a unit of angle measure
- Radian - math word definition
Derivative
- Derivative - Math word definition - Math Open Reference
- Calculus - Basic curve analysis
- Calculus - Constant multiples of functions
- Calculus - Curve Analysis - Global Extrema
- Calculus - Curve analysis - special cases
- Calculus - Derivative at a Point
- Calculus - derivative combinations: sum and difference
- Calculus - Derivative Function
- Calculus - Exponential Functions
- Calculus - Hyperbolic Functions
- Calculus - Invertible Functions
- Calculus - Linear Approximations
- Calculus - Parametric Derivatives
- Calculus - Polar Derivatives
- Calculus - Product and Quotient of Functions
- Calculus - Related Rates - a melting snowball
- Calculus - Table view of the Derivative
- Calculus - trigonometric Functions
Diagonal
- Diagonal - math word definition
- Diagonals of a rectangle
- Diagonals of a square
- Parallelogram and its properties. (Coordinate Geometry)
- Parallelogram diagonals bisect each other
- Polygon diagonals
- Rectangle and its properties. (Coordinate Geometry)
- Rhombus diagonals bisect each other at right angles
- Square and its properties. (Coordinate Geometry)
Diameter
- Diameter - math word definition
- Semicircle - math word definition
- Thales theorem
Difference
- Difference - Math word definition - Math Open Reference
- Calculus - derivative combinations: sum and difference
Differentiability
- Differentiability - Math word definition - Math Open Reference
- Calculus - Differentiability
Differentiable
- Differentiable - Math word definition - Math Open Reference
- Calculus - making a function continuous and differentiable
- Calculus - Twice differentiable
Differential equation
- Differential-equation - Math word definition - Math Open Reference
- Calculus - Euler's Method
- Calculus - Introduction to Differential Equations
- Calculus - Separation of Variables
- Calculus - Slope Fields
Dilate
- Dilation - math word definition
Distance
- Distance - math word definition
- Calculus - Approximating Distance Traveled
- Distance between points
- Distance from a point to a line
- Distance from a point to a line using a formula
- Distance from a point to a line using trigonometry
- Distance from a point to a line using two line equations
- Distance from a point to a vertical or horizontal line
Dodecagon
- Dodecagon - math word definition
Domain
- Domain - math word definition
- Function - math word definition
Edge
- Definition of the math word edge
Ellipse
- Ellipse - math word definition
- Area enclosed by an ellipse
- Circle and ellipse drawing algorithm
- Elliptical mirrors
- Finding the foci an ellipse
- Foci of an ellipse
- General Equation of an Ellipse
- How to construct (draw) an ellipse
- Major / minor axis of an ellipse
- Parametric Equation of an Ellipse
- Perimeter of an Ellipse
- Semi-major / semi-minor axis of an ellipse
- Tangent to an ellipse
Equation
- Equation - math word definition
- Basic Equation of a Circle
- Equation of a line - point - slope form. (Coordinate Geometry)
- Equation of a line - slope and intercept form. (Coordinate Geometry)
- General Equation of an Ellipse
- General form of Equation of a Circle
- Parametric Equation of a Circle
- Parametric Equation of an Ellipse
Equiangular
- Equiangular - math word definition
- Regular Polygon - math word definition
Equidistant
- Equidistant - math word definition
Equilateral
- Equilateral - math word definition
- Area of an equilateral triangle
- How to construct (draw) an equilateral triangle with compass and straightedge or ruler
Euclid
- Euclid - math word definition
- Constructions Introduction. Drawing shapes with compass and straightedge
Euler
- Euler the mathematician - Math word definition
- Calculus - Euler's Method
- Euler line
Evt
- Evt - Math word definition - Math Open Reference
- Calculus - Extreme Value Theorem
Exponential
- Exponential - Math word definition - Math Open Reference
- Calculus - Exponential Functions
Exterior angle
- Exterior angle - math word definition
- Alternate Exterior Angles definition
- Exterior Angles - math word definition
- Exterior Angles of a Transversal definition
- Interior / exterior angles of a polygon
- Triangle exterior angles definition
Extrema
- Extrema - Math word definition - Math Open Reference
- Calculus - Curve Analysis - Global Extrema
Extreme
- Extreme - Math word definition - Math Open Reference
- Calculus - Extreme Value Theorem
Face
- Definition of the math word face
Foci
- Foci - math word definition
- Ellipse - math word definition
- Foci of an ellipse
Focus
- Focus - math word definition
- Ellipse - math word definition
- Elliptical mirrors
- Finding the foci an ellipse
- Foci of an ellipse
Fraction
- Fraction - math word definition
- Reciprocal - math word definition
Full angle
- Full angle - Math word definition
- Full Angle - An angle with a measure of 360 deg
Function
- Function - math word definition
- Calculus - Derivative Function
- Calculus - Functions defined using integrals
- Calculus - Invertible Functions
- Cosine - math word definition
- Domain - math word definition
- Functions as used in programming languages
- Graph of a function
- Graph of the Cosine function - Trigonometry
- Graph of the Sine function - Trigonometry
- Graph of the Tangent function - Trigonometry
- Graphical Function Explorer grapher (GFE)
- Introduction to the 6 trigonometry functions
- Linear function graphical explorer (ax+b)
- Linear function graphical explorer (mx+b)
- Secant function (sec) - Trigonometry
- SOHCAHTOA - math word definition - Trigonometry
- The sine function - math word definition
- The tangent function in right triangles - Trigonometry
Fundamental
- Fundamental - Math word definition - Math Open Reference
- Calculus - Fundamental Theorem of Calculus
Global
- Global - Math word definition - Math Open Reference
- Calculus - Curve Analysis - Global Extrema
Golden rectangle
- The Golden Rectangle - math word definition
Graph
- Graph of a function
- Cubic curve and graph display
- Graph of the Cosine function - Trigonometry
- Graph of the Sine function - Trigonometry
- Graph of the Tangent function - Trigonometry
- Graphical Function Explorer grapher (GFE)
- How to customize the General Function Explorer (GFE)
- Linear function graphical explorer (ax+b)
- Linear function graphical explorer (mx+b)
- Print blank graph paper
- Quadratic curve and graph display (standard form)
- Quadratic curve and graph display (vertex form)
- Sine waves- math word definition - Trigonometry
- When the graph tool seems to produce incorrect results
Growth
- Growth - Math word definition - Math Open Reference
- Calculus - Growth, Decay, and the Logistic Equation
Height
- Height - Math word definition - Math Open Reference
- Slant height of a right cone
Heptagon
- Heptagon - math word definition
Heron
- Biography of Heron
- Heron's formula - triangle area given three sides
Hexagon
- Hexagon - math word definition
- How to construct (draw) a regular hexagon given one side with compass and straightedge or ruler
- How to construct (draw) a regular hexagon inscribed in a circle with compass and straightedge or ruler
Horizontal
- Horizontal - math word definition
- Horizontal line definition. (Coordinate Geometry)
Hyperbolic
- Hyperbolic - Math word definition - Math Open Reference
- Calculus - Hyperbolic Functions
Hypotenuse
- Hypotenuse - math word definition
- HL Congruent Triangles
- Triangle definition and properties
I
- The letter i - math word definition
- Complex numbers - animated definition
- Imaginary number - math word definition
- The letter j - math word definition
Icosahedron
- Icosahedron - A regular polyhedron with 20 faces - One of the platonic solids
Identity
- Identity - math word definition
- Trigonometry identities
Imaginary number
- Imaginary number - math word definition
- Complex numbers - animated definition
- Real number - math word definition
- The letter i - math word definition
- The letter j - math word definition
Improper
- Improper - Math word definition - Math Open Reference
- Calculus - Improper Integrals
Incenter
- Incenter - math word definition
- How to construct (draw) the incircle of a triangle with compass and straightedge or ruler
- How to construct (draw) the incenter of a triangle with compass and straightedge or ruler
- Incenter of a regular polygon
- Triangle Centers Overview
- Triangle incenter, description and properties
- Triangle incircle definition
Incircle
- Incircle - Math word definition - Math Open Reference
- How to construct (draw) the incircle of a triangle with compass and straightedge or ruler
- How to construct (draw) the incenter of a triangle with compass and straightedge or ruler
- Incenter of a regular polygon
- Incircle
- Incircle of a Polygon
- Triangle incircle definition
Included
- Included - math word definition
- Included angle definition
- Included side definition
Inequality
- Inequality - Math word definition - Math Open Reference
- Triangle inequality theorem
Initial
- Initial - Math word definition - Math Open Reference
- Initial side - math word definition - Trigonometry
Inradius
- Inradius - Math word definition - Math Open Reference
- Incircle of a Polygon
- Triangle incircle definition
Inscribed
- Inscribed - Math word definition - Math Open Reference
- Angle inscribed in a semicircle
- Arc Peripheral Angle
- Constructing a regular pentagon inscribed in a circle
- How to construct (draw) a regular hexagon inscribed in a circle with compass and straightedge or ruler
- Incircle
- Inscribed angle of a circle
- Triangle incircle definition
Instantaneous
- Instantaneous - Math word definition - Math Open Reference
- Calculus - Instantaneous Velocity
Integral
- Integral - Math word definition - Math Open Reference
- Calculus - Functions defined using integrals
- Calculus - Improper Integrals
- Calculus - Integral Test
- Calculus - Polar Area
- Calculus - Properties of Definite Integrals
- Calculus - Riemann Sums
Integration
- Integration - Math word definition - Math Open Reference
- Calculus - Integration By Substitution
Intercept
- Intercept - Math word definition - Math Open Reference
- Equation of a line - slope and intercept form. (Coordinate Geometry)
- Intercept (b) of a line (Coordinate Geometry)
- Intercepted arc
- Introduction to Lines in Coordinate Geometry
Interior
- Interior - math word definition
- Alternate Interior Angles definition
- Interior / exterior angles of a polygon
- Interior Angles of a transversal definition
- Interior of an angle definition
- Polygon Interior Angles
- Triangle interior angles definition
Intermediate
- Intermediate - Math word definition - Math Open Reference
- Calculus - Intermediate Value Theorem
Intersect
- Intersect - Math word definition - Math Open Reference
- Intersecting Chord Theorem
- Intersecting Secant Angles Theorem
- Intersecting Secant Theorem
- Intersecting straight lines. (Coordinate Geometry)
- Intersection - math word definition
Inverse
- Inverse - Math word definition - Math Open Reference
- Calculus - Invertible Functions
Irregular
- Irregular - Math word definition - Math Open Reference
- Area of an Irregular Polygon
- Irregular polygon - math word definition
Isosceles
- Isosceles triangle - math word definition
- How to construct (draw) an isosceles triangle given base and a side
- How to construct (draw) an isosceles triangle given base and altitude with compass and straightedge or ruler
Ivt
- Ivt - Math word definition - Math Open Reference
- Calculus - Intermediate Value Theorem
J
- The letter j - math word definition
- Complex numbers - animated definition
- Imaginary number - math word definition
- The letter i - math word definition
Kite
- Kite - math word definition
- Area of a Kite
- Perimeter of a kite
Lagrange
- Lagrange - Math word definition - Math Open Reference
- Calculus - Lagrange Remainder
Law
- Law - Math word definition - Math Open Reference
- Solving Triangles
- The Law of Cosines
- The Law of Sines
Leg
- Leg - Math word definition - Math Open Reference
- Angle - Math word definition
Lhopital
- Lhopital - Math word definition - Math Open Reference
- Calculus - L'Hopital's Rule
Limit
- Limit - Math word definition - Math Open Reference
- Calculus - 1 and 2-sided limits and no limits
- Calculus - Approximating Distance Traveled Using a Graph
- Calculus - Instantaneous Velocity
- Calculus - Limit Comparison Test
- Calculus - limits at infinity
- Calculus - Limits: Informal view
- Calculus - Tabular view of limits
Limits
- Limits - Math word definition - Math Open Reference
- Calculus - Formal view of limits
Line
- Line - math word definition
- Congruent Lines Definition
- Distance from a point to a line
- Distance from a point to a line using a formula
- Distance from a point to a line using trigonometry
- Distance from a point to a line using two line equations
- Distance from a point to a vertical or horizontal line
- Equation of a line - point - slope form. (Coordinate Geometry)
- Equation of a line - slope and intercept form. (Coordinate Geometry)
- Euler line
- Horizontal - math word definition
- Horizontal line definition. (Coordinate Geometry)
- Intercept (b) of a line (Coordinate Geometry)
- Intersecting straight lines. (Coordinate Geometry)
- Intersection - math word definition
- Introduction to Lines in Coordinate Geometry
- Line definition (Coordinate Geometry)
- Line segment bisector definition
- Line Segment Definition
- Line Segment definition (Coordinate Geometry)
- Midpoint Theorem (Coordinate Geometry)
- Parallel lines - math word definition
- Parallel lines. (Coordinate Geometry)
- Perpendicular - math word definition
- Perpendicular bisector definition
- Perpendicular lines. (Coordinate Geometry)
- Ray - math word definition
- Reflection - a mirror image of a line segment
- Slope (m) of a line (Coordinate Geometry)
- Slope (m) of a line (Coordinate Geometry)
- Tangent to a circle definition
- Transversal - math word definition
- Vertical - math word definition
- Vertical line definition. (Coordinate Geometry)
Linear
- Linear - Math word definition - Math Open Reference
- Calculus - Linear Approximations
- Calculus - Motion along a line
- Linear function graphical explorer (ax+b)
- Linear function graphical explorer (mx+b)
- Linear Pair - math word definition
Locus
- Locus - math word definition
Logistic
- Logistic - Math word definition - Math Open Reference
- Calculus - Growth, Decay, and the Logistic Equation
Major
- Major - Math word definition - Math Open Reference
- Major / minor axis of an ellipse
- Major and Minor Arcs
- Semi-major / semi-minor axis of an ellipse
Mean
- Mean - Math word definition - Math Open Reference
- Calculus - Mean Value Theorem
Measure
- Measure - Math word definition - Math Open Reference
- Angle measure of an arc
Median
- Median - Math word definition - Math Open Reference
- How to construct (draw) the medians of a triangle
- Median of a triangle - math word definition
- Trapezoid and its properties. (Coordinate Geometry)
- Trapezoid median (midline, midsegment) definition
Midline
- Midline - Math word definition - Math Open Reference
- Trapezoid median (midline, midsegment) definition
Midpoint
- Midpoint - math word definition
- Calculus - Midpoint and Trapezoidal Riemann Sums
- Midpoint Theorem (Coordinate Geometry)
Midsegment
- Midsegment - Math word definition - Math Open Reference
- Trapezoid median (midline, midsegment) definition
- Triangle midsegment - math word definition
Minor
- Minor - Math word definition - Math Open Reference
- Major / minor axis of an ellipse
- Major and Minor Arcs
- Semi-major / semi-minor axis of an ellipse
Mirror
- Mirror - Math word definition - Math Open Reference
- Elliptical mirrors
Motion
- Motion - Math word definition - Math Open Reference
- Calculus - Equations of Motion
- Calculus - Motion along a line
- Calculus - Motion on a Plane
Multiples
- Multiples - Math word definition - Math Open Reference
- Calculus - Constant multiples of functions
Nonagon
- Nonagon - math word definition
Normal
- Normal - Math word definition - Math Open Reference
- Perpendicular - math word definition
Number
- Number - Math word definition - Math Open Reference
- Complex numbers - animated definition
- Imaginary number - math word definition
- Real number - math word definition
Number line
- Number-line - Math word definition - Math Open Reference
- Real number - math word definition
Oblique
- Oblique - Math word definition - Math Open Reference
- Oblique versus right pyramid
Oblong
- Oblong - Math word definition - Math Open Reference
- Rectangle - math word definition
Obtuse
- Obtuse - math word definition
- Obtuse Angle definition
- Obtuse triangle definition
Octagon
- Octagon - math word definition
Opposite
- Opposite - Math word definition - Math Open Reference
- Opposite Rays Definition
- Vertical Angles definition
Ordinate
- Ordinate - math word definition
- Coordinates of a point
Origin
- Origin - math word definition
- Introduction to Coordinate Geometry
- The Coordinate Plane
Orthocenter
- Orthocenter - Math word definition - Math Open Reference
- Euler line
- How to construct (draw) the orthocenter of a triangle
- Orthocenter of a triangle - math word definition
- Triangle Centers Overview
Orthogonal
- Orthogonal - Math word definition - Math Open Reference
- Right Angle - math word definition
Outlier
- Outlier - math word definition
Parallel
- Parallel lines - math word definition
- How to construct (draw) a parallel through a point with compass and straightedge or ruler
- How to construct (draw) a parallel through a point with compass and straightedge or ruler (rhombus method)
- Parallel lines. (Coordinate Geometry)
- Transversal - math word definition
Parallelogram
- Parallelogram - math word definition
- Area of a parallelogram. Definition and formula
- Interior angles of a parallelogram
- Parallelogram and its properties. (Coordinate Geometry)
- Parallelogram diagonals bisect each other
- Perimeter of a parallelogram
Parameter
- Parameter - Math word definition - Math Open Reference
- Parametric Equation of a Circle
- Parametric Equation of an Ellipse
Parametric
- Parametric - Math word definition - Math Open Reference
- Calculus - Parametric Derivatives
Pentagon
- Pentagon - math word definition
- Constructing a regular pentagon inscribed in a circle
Perimeter
- Perimeter - Math word definition - Math Open Reference
- Circumference (perimeter) of a circle definition
- Perimeter of a kite
- Perimeter of a parallelogram
- Perimeter of a polygon
- Perimeter of a rectangle
- Perimeter of a rhombus
- Perimeter of a square
- Perimeter of a trapezoid
- Perimeter of a triangle
- Perimeter of an Ellipse
- Rectangle area and perimeter. (Coordinate Geometry)
- Relationship of area and perimeter of a triangle
- Square and its properties. (Coordinate Geometry)
- Trapezoid area and perimeter. (Coordinate Geometry)
Peripheral
- Peripheral - Math word definition - Math Open Reference
- Arc Peripheral Angle
Perpendicular
- Perpendicular - math word definition
- How to construct (draw) a perpendicular at a point on a line
- How to construct (draw) a perpendicular at the end of a ray with compass and straightedge or ruler
- How to construct (draw) a perpendicular from a line through a point
- Perpendicular bisector definition
- Perpendicular lines. (Coordinate Geometry)
- Transversal - math word definition
- Video: How to construct (draw) a perpendicular from a line through a point
Pi
- PI - math word definition
- Area enclosed by a circle
- Area enclosed by an ellipse
- Area of an annulus
Plane
- Plane - math word definition
- Calculus - Motion on a Plane
- Coplanar - Math word definition
- Introduction to Coordinate Geometry
- Introduction to plane geometry
- The Coordinate Plane
Platonic solid
- Platonic-solid - Math word definition - Math Open Reference
- Icosahedron - A regular polyhedron with 20 faces - One of the platonic solids
Point
- Point - math word definition
- Calculus - Derivative at a Point
- Collinear - Math word definition
- Coordinates of a point
- Distance between points
- Distance from a point to a line
- Distance from a point to a line using a formula
- Distance from a point to a line using trigonometry
- Distance from a point to a line using two line equations
- Distance from a point to a vertical or horizontal line
- Equation of a line - point - slope form. (Coordinate Geometry)
- Equidistant - math word definition
- Introduction to Coordinate Geometry
- Locus - math word definition
- Points of concurrency
- Reflection - a mirror image of a point
Polar
- Polar - Math word definition - Math Open Reference
- Calculus - Polar Area
- Calculus - Polar Derivatives
Polygon
- Polygon - math word definition
- Apothem of a polygon
- Area of an Irregular Polygon
- Area of any polygon (Coordinate Geometry)
- Center of a Polygon
- Central Angle of a Polygon
- Circumcircle of a Regular Polygon
- Concave Polygon Definition
- Congruent Polygon Tests
- Congruent Polygons
- Convex Polygon Definition
- Decagon - math word definition
- Dodecagon - math word definition
- Exterior Angles - math word definition
- Heptagon - math word definition
- Hexagon - math word definition
- Incenter of a regular polygon
- Incircle of a Polygon
- Interior / exterior angles of a polygon
- Irregular polygon - math word definition
- Nonagon - math word definition
- Octagon - math word definition
- Pentagon - math word definition
- Perimeter of a polygon
- Polygon area algorithm
- Polygon area calculator
- Polygon diagonals
- Polygon Interior Angles
- Radius of a Regular Polygon
- Regular polygon area formula
- Regular Polygon - math word definition
- Sides of a Polygon
- Similar polygons and triangles defined
- Tetragon - math word definition
- Triangles of a Polygon
- Undecagon - math word definition
Polyhedron
- Polyhedron - Math word definition - Math Open Reference
- Definition of the math word edge
- Definition of the math word face
- Icosahedron - A regular polyhedron with 20 faces - One of the platonic solids
- Oblique versus right pyramid
- Pyramid - Math word definition
Position
- Position - Math word definition - Math Open Reference
- Calculus - Equations of Motion
Power
- Power - Math word definition - Math Open Reference
- Calculus - Power Functions
- Calculus - Power Series
Prism
- Volume of a triangular prism
Problems
- Problems - Math word definition - Math Open Reference
- Many triangles answer
- Many triangles II answer
- The 'Ball Box' math problem
- The 'Many Triangles' math problem
- The 'Many Triangles' math problem
- The 'Three Satellites' triangle math problem
- Trigonometry problems - Slant distance
- Trigonometry problems - Slope angle
Product
- Product - Math word definition - Math Open Reference
- Calculus - Product and Quotient of Functions
Proof
- Proof - Math word definition - Math Open Reference
- Pythagorean Theorem Proof
Protractor
- Protractor - math word definition
- How to use a protractor
- How to use a protractor to draw an angle
Pyramid
- Pyramid - Math word definition
- Oblique versus right pyramid
- Surface area of a pyramid
- Volume of a pyramid
Pythagoras
- Biography of Pythagoras - math word definition
- 30-60-90 triangle definition
- 3:4:5 triangle definition
- 45-45-90 triangle definition
- Distance between points
- Pythagorean Theorem - math word definition
- Pythagorean Theorem Proof
- Pythagorean triples triangle definition
- Solving Triangles
- Solving Triangles using Trigonometry
- Trigonometry - math word definition
Pythagorean
- Pythagorean - Math word definition - Math Open Reference
- Pythagorean Theorem - math word definition
- Pythagorean Theorem Proof
Qed
- Q.E.D. - math word definition
Quadrangle
- Quadrangle - Math word definition - Math Open Reference
- Quadrilateral (also: tetragon, quadrangle) - math word definition
- Rectangle - math word definition
- Square - math word definition
Quadrant
- Quadrant - Math word definition - Math Open Reference
- The Coordinate Plane
Quadrantal
- Quadrantal - Math word definition - Math Open Reference
- Quadrantal angle - math word definition - Trigonometry
Quadratic
- Quadratic - Math word definition - Math Open Reference
- Quadratic curve and graph display (standard form)
- Quadratic curve and graph display (vertex form)
Quadrilateral
- Quadrilateral (also: tetragon, quadrangle) - math word definition
- Area of a Kite
- Kite - math word definition
- Parallelogram - math word definition
- Rectangle - math word definition
- Rhombus - math word definition
- Square - math word definition
- Trapezium - math word definition
- Trapezoid - math word definition
Quiz
- Quiz - Math word definition - Math Open Reference
- Angle Quiz 1
- Triangle Quiz 1
Quotient
- Quotient - Math word definition - Math Open Reference
- Calculus - Product and Quotient of Functions
Radians
- Radian - math word definition
- Angle definition and properties (Trigonometry)
- Degrees as a unit of angle measure
Radical
- Radical - math word definition
- Radical sign or symbol - math word definition
- Root - math word definition
Radical sign
- Radical sign or symbol - math word definition
Radicand
- Radicand - math word definition
- Radical - math word definition
- Radical sign or symbol - math word definition
- Root - math word definition
Radius
- Radius of a circle - math word definition
- Circumcircle of a Regular Polygon
- Circumference (perimeter) of a circle definition
- Radius of a Regular Polygon
- Radius of an Arc or Segment
- Semicircle - math word definition
Range
- Range of a function
- Function - math word definition
Rate
- Rate - Math word definition - Math Open Reference
- Calculus - Related Rates - a melting snowball
Ratio
- Ratio - math word definition
- Calculus - Ratio Test
Ray
- Ray - math word definition
- Opposite Rays Definition
- Ray definition (Coordinate Geometry)
Real number
- Real number - math word definition
- Complex numbers - animated definition
- Imaginary number - math word definition
Reciprocal
- Reciprocal - math word definition
Rectangle
- Rectangle - math word definition
- Area of a rectangle. Definition and formula
- Circumscribed rectangle, bounding box. (Coordinate Geometry)
- Diagonals of a rectangle
- Perimeter of a rectangle
- Rectangle and its properties. (Coordinate Geometry)
- Rectangle area and perimeter. (Coordinate Geometry)
- Rectangles and International paper sizes
- The Golden Rectangle - math word definition
Reflect
- Reflection - math word definition
- Reflection - a mirror image of a line segment
- Reflection - a mirror image of a point
Reflex
- Reflex - Math word definition - Math Open Reference
- Reflex Angle definition
Regular
- Regular - Math word definition - Math Open Reference
- Regular polygon area formula
- Regular Polygon - math word definition
Revolution
- Revolution - Math word definition - Math Open Reference
- Calculus - Volumes of Revolution
Rhombus
- Rhombus - math word definition
- How to construct (draw) a parallel through a point with compass and straightedge or ruler (rhombus method)
- Perimeter of a rhombus
- Rhombus area formula
- Rhombus diagonals bisect each other at right angles
Riemann
- Riemann - Math word definition - Math Open Reference
- Calculus - Midpoint and Trapezoidal Riemann Sums
- Calculus - Riemann Sums
Riemann sum
- Riemann-sum - Math word definition - Math Open Reference
- Calculus - Midpoint and Trapezoidal Riemann Sums
- Calculus - Riemann Sums
Right
- Right - Math word definition - Math Open Reference
- Oblique versus right pyramid
- Pythagorean Theorem - math word definition
- Right Angle - math word definition
- Right triangle definition
Right angle
- Right-angle - Math word definition - Math Open Reference
- How to construct (draw) a 90 degree angle with compass and straightedge or ruler
- Perpendicular - math word definition
Root
- Root - math word definition
- Radical - math word definition
- Radical sign or symbol - math word definition
- Radicand - math word definition
Rotate
- Rotation - math word definition
Ruler
- Ruler - Math word definition - Math Open Reference
- Constructing 75, 105, 120, 135, 150 degree angles and more
- Constructing a regular pentagon inscribed in a circle
- Constructions Introduction. Drawing shapes with compass and straightedge
- Copying a line segment with compass and straightedge or ruler
- Copying a triangle with compass and straightedge or ruler
- Dividing a line segment into N equal parts with compass and straightedge or ruler
- Finding the center of a circle (with any right-angled object)
- Finding the center of a circle with compass and straightedge or ruler
- How to bisect a line with compass and straightedge or ruler
- How to bisect an angle with compass and straightedge or ruler
- How to bisect an angle with compass and straightedge or ruler
- How to construct (draw) a 30 degree angle with compass and straightedge or ruler
- How to construct (draw) a 45 degree angle with compass and straightedge or ruler
- How to construct (draw) a 60 degree angle with compass and straightedge or ruler
- How to construct (draw) a 90 degree angle with compass and straightedge or ruler
- How to construct (draw) a circle through the 3 vertices of a triangle with compass and straightedge or ruler
- How to construct (draw) a parallel through a point with compass and straightedge or ruler
- How to construct (draw) a perpendicular at a point on a line
- How to construct (draw) a perpendicular at the end of a ray with compass and straightedge or ruler
- How to construct (draw) a perpendicular from a line through a point
- How to construct (draw) a tangent to a circle
- How to construct (draw) a triangle given three sides
- How to construct (draw) a triangle given two angles and the included side
- How to construct (draw) a triangle given two sides and the included angle
- How to construct (draw) an equilateral triangle with compass and straightedge or ruler
- How to construct (draw) circumcenter of a triangle with compass and straightedge or ruler
- How to construct (draw) tangents to a circle through an external point
- How to construct (draw) the incircle of a triangle with compass and straightedge or ruler
- How to construct (draw) the centroid of a triangle with compass and straightedge or ruler
- How to construct (draw) the incenter of a triangle with compass and straightedge or ruler
- How to construct (draw) the medians of a triangle
- How to construct (draw) the orthocenter of a triangle
- How to construct (draw) a 30-60-90 triangle with compass and straightedge or ruler
- How to construct (draw) a circle through 3 points with compass and straightedge or ruler
- How to construct (draw) a parallel through a point with compass and straightedge or ruler (rhombus method)
- How to construct (draw) a regular hexagon given one side with compass and straightedge or ruler
- How to construct (draw) a regular hexagon inscribed in a circle with compass and straightedge or ruler
- How to construct (draw) an isosceles triangle given base and a side
- How to construct (draw) an isosceles triangle given base and altitude with compass and straightedge or ruler
- How to copy an angle with compass and straightedge or ruler
- How to use a protractor to draw an angle
- Video: How to construct (draw) a perpendicular from a line through a point
Sas
- Sas - Math word definition - Math Open Reference
- Area of a triangle (Side-angle-side method)
- SAS Congruent Triangles
Scalene
- Scalene triangle - math word definition
Sec
- SEC - Math word definition
- Secant function (sec) - Trigonometry
Secant
- Secant - math word definition
- Chord - Math word definition
- Intersecting Secant Angles Theorem
- Intersecting Secant Theorem
- Introduction to the 6 trigonometry functions
- Secant function (sec) - Trigonometry
- Secant of a circle definition
Second
- Second - Math word definition - Math Open Reference
- Calculus - Second Fundamental Theorem of Calculus
Second derivative
- Second-derivative - Math word definition - Math Open Reference
- Calculus - Second Derivative
- Calculus - Table view of second derivative
Sector
- Sector - Math word definition - Math Open Reference
- Area of a sector of a circle
- Sector definition
Segment
- Segment of a Circle
- Area of a circle segment
- Copying a line segment with compass and straightedge or ruler
- Dividing a line segment into N equal parts with compass and straightedge or ruler
- Line Segment Definition
- Line Segment definition (Coordinate Geometry)
- Midpoint Theorem (Coordinate Geometry)
- Radius of an Arc or Segment
Semi
- Semi - Math word definition - Math Open Reference
- Semi-major / semi-minor axis of an ellipse
Semicircle
- Semicircle - math word definition
- Angle inscribed in a semicircle
Separation
- Separation - Math word definition - Math Open Reference
- Calculus - Separation of Variables
Sequence
- Sequence - Math word definition - Math Open Reference
- Calculus - Sequences
Series
- Series - Math word definition - Math Open Reference
- Calculus - Alternating Series Test
- Calculus - Power Series
- Calculus - Series
- Calculus - Taylor series and Polynomials
Side
- Side - Math word definition - Math Open Reference
- Adjacent sides definition
- Included side definition
- Relationship of side lengths and angles of a triangle
- SAS Triangle similarity test
- Sides of a Polygon
- SSS Congruent Triangles
- SSS Triangle similarity test
Similar
- Similar - Math word definition - Math Open Reference
- AAA Triangle similarity test
- SAS Triangle similarity test
- Similar polygons and triangles defined
- Similar Triangles
- SSS Triangle similarity test
- Triangle similarity, ratios of area
- Triangle similarity, ratios of parts
Sin
- SIN - Math word definition
- Graph of the Sine function - Trigonometry
- Sine waves- math word definition - Trigonometry
- The sine function - math word definition
- Trigonometry Overview
Sine
- The sine function - math word definition
- Graph of the Sine function - Trigonometry
- Introduction to the 6 trigonometry functions
- SOHCAHTOA - math word definition - Trigonometry
- Solving Triangles
- The Law of Sines
Slope
- Slope - Math word definition - Math Open Reference
- Calculus - Antiderivatives from Slope
- Calculus - Slope Fields
- Equation of a line - point - slope form. (Coordinate Geometry)
- Equation of a line - slope and intercept form. (Coordinate Geometry)
- Introduction to Lines in Coordinate Geometry
- Slope (m) of a line (Coordinate Geometry)
Sohcahtoa
- SOHCAHTOA - math word definition - Trigonometry
Solving
- Solving - Math word definition - Math Open Reference
- Solving Triangles using Trigonometry
- Trigonometry - math word definition
- Trigonometry problems - Slant distance
- Trigonometry problems - Slope angle
Speed
- Speed - Math word definition - Math Open Reference
- Calculus - Equations of Motion
Sphere
- Sphere - Math word definition - Math Open Reference
- Surface area of a sphere
- Volume of a sphere
Square
- Square - math word definition
- Area of a square. Definition and formula
- Diagonals of a square
- Perimeter of a square
- Square and its properties. (Coordinate Geometry)
- Square and its properties. (Coordinate Geometry)
Standard
- Standard - Math word definition - Math Open Reference
- Standard position of an angle definition - Trigonometry
Statistics
- Statistics - Math word definition - Math Open Reference
- Outlier - math word definition
Straight
- Straight - Math word definition - Math Open Reference
- Straight Angle definition
Straightedge
- Straightedge - Math word definition - Math Open Reference
- Constructing 75, 105, 120, 135, 150 degree angles and more
- Constructing a regular pentagon inscribed in a circle
- Constructions Introduction. Drawing shapes with compass and straightedge
- Copying a line segment with compass and straightedge or ruler
- Copying a triangle with compass and straightedge or ruler
- Dividing a line segment into N equal parts with compass and straightedge or ruler
- Finding the center of a circle with compass and straightedge or ruler
- How to bisect a line with compass and straightedge or ruler
- How to bisect an angle with compass and straightedge or ruler
- How to construct (draw) a 30 degree angle with compass and straightedge or ruler
- How to construct (draw) a 45 degree angle with compass and straightedge or ruler
- How to construct (draw) a 60 degree angle with compass and straightedge or ruler
- How to construct (draw) a 90 degree angle with compass and straightedge or ruler
- How to construct (draw) a circle through the 3 vertices of a triangle with compass and straightedge or ruler
- How to construct (draw) a parallel through a point with compass and straightedge or ruler
- How to construct (draw) a perpendicular at a point on a line
- How to construct (draw) a perpendicular at the end of a ray with compass and straightedge or ruler
- How to construct (draw) a perpendicular from a line through a point
- How to construct (draw) a tangent to a circle
- How to construct (draw) a triangle given three sides
- How to construct (draw) a triangle given two angles and the included side
- How to construct (draw) a triangle given two sides and the included angle
- How to construct (draw) an equilateral triangle with compass and straightedge or ruler
- How to construct (draw) circumcenter of a triangle with compass and straightedge or ruler
- How to construct (draw) tangents to a circle through an external point
- How to construct (draw) the incircle of a triangle with compass and straightedge or ruler
- How to construct (draw) the centroid of a triangle with compass and straightedge or ruler
- How to construct (draw) the incenter of a triangle with compass and straightedge or ruler
- How to construct (draw) the medians of a triangle
- How to construct (draw) the orthocenter of a triangle
- How to construct (draw) a 30-60-90 triangle with compass and straightedge or ruler
- How to construct (draw) a circle through 3 points with compass and straightedge or ruler
- How to construct (draw) a parallel through a point with compass and straightedge or ruler (rhombus method)
- How to construct (draw) a regular hexagon given one side with compass and straightedge or ruler
- How to construct (draw) a regular hexagon inscribed in a circle with compass and straightedge or ruler
- How to construct (draw) an isosceles triangle given base and a side
- How to construct (draw) an isosceles triangle given base and altitude with compass and straightedge or ruler
- How to copy an angle with compass and straightedge or ruler
- Video: How to construct (draw) a perpendicular from a line through a point
Substitution
- Substitution - Math word definition - Math Open Reference
- Calculus - Integration By Substitution
Subtended
- Subtended - Math word definition - Math Open Reference
- Subtended angle definition
Sum
- Sum - Math word definition - Math Open Reference
- Calculus - derivative combinations: sum and difference
Supplementary
- Supplementary - Math word definition - Math Open Reference
- Supplementary Angles definition
Surd
- Surd - math word definition
Surface area
- Surface area of 3D solid shapes with formula and links to other pages - Math Open Reference.
- Surface area of a cube
- Surface area of a cylinder
- Surface area of a right cone
Tan
- TAN - Math word definition
- Graph of the Tangent function - Trigonometry
- The tangent function in right triangles - Trigonometry
- Trigonometry Overview
Tangent
- Tangent - math word definition
- Graph of the Tangent function - Trigonometry
- How to construct (draw) a tangent to a circle
- How to construct (draw) tangents to a circle through an external point
- Introduction to the 6 trigonometry functions
- SOHCAHTOA - math word definition - Trigonometry
- Tangent to a circle definition
- Tangent to an ellipse
- The tangent function in right triangles - Trigonometry
Taylor
- Taylor - Math word definition - Math Open Reference
- Calculus - Taylor series and Polynomials
Terminal
- Terminal - Math word definition - Math Open Reference
- Coterminal - math word definition
- Terminal side definition - Trigonometry
Test
- Test - Math word definition - Math Open Reference
- Calculus - Alternating Series Test
- Calculus - Comparison Test
- Calculus - Integral Test
- Calculus - Limit Comparison Test
- Calculus - Ratio Test
Tetragon
- Tetragon - math word definition
- Quadrilateral (also: tetragon, quadrangle) - math word definition
Thales
- Biography of Thales - math word definition
- Thales theorem
Theorem
- Theorem - Math word definition - Math Open Reference
- Biography of Pythagoras - math word definition
- Biography of Thales - math word definition
- Calculus - Fundamental Theorem of Calculus
- Calculus - Second Fundamental Theorem of Calculus
- Central Angle Theorem
- Thales theorem
- Triangle inequality theorem
Tools
- Tools - Math word definition - Math Open Reference
- Cubic curve and graph display
- Linear function graphical explorer (ax+b)
- Linear function graphical explorer (mx+b)
- Quadratic curve and graph display (standard form)
- Quadratic curve and graph display (vertex form)
Transform
- Transform - Math word definition - Math Open Reference
- Calculus - Transformations of Functions
- Dilation - math word definition
- Reflection - a mirror image of a line segment
- Reflection - a mirror image of a point
- Reflection - math word definition
- Rotation - math word definition
- Translation - math word definition
Translate
- Translation - math word definition
Transversal
- Transversal - math word definition
- Exterior Angles of a Transversal definition
- Interior Angles of a transversal definition
Trapezium
- Trapezium - math word definition
Trapezoid
- Trapezoid - math word definition
- Area of a trapezoid. Definition and formula
- Calculus - Midpoint and Trapezoidal Riemann Sums
- Perimeter of a trapezoid
- Trapezoid and its properties. (Coordinate Geometry)
- Trapezoid area and perimeter. (Coordinate Geometry)
- Trapezoid median (midline, midsegment) definition
- Video: Example - finding area of a trapezoid given bases, legs and altitude
- Video: Example - finding area of a trapezoid given bases, one leg and two angles
- Video: How the formula for the area of a trapezoid is derived
- Video: Video: Example - finding a base of a trapezoid given area, one base and altitude
Triangle
- Triangle definition and properties
- 30-60-90 triangle definition
- 3:4:5 triangle definition
- 45-45-90 triangle definition
- AAA Doesn't work
- AAA Triangle similarity test
- AAS Congruent Triangles
- Acute triangle definition
- Area of a triangle (conventional method)
- Area of a triangle (Coordinate Geometry)
- Area of a triangle (Side-angle-side method)
- Area of a triangle using the box method (Coordinate Geometry)
- Area of an equilateral triangle
- ASA Congruent Triangles
- Base - Math word definition
- Circumcircle of a Triangle
- Classification of triangles
- Congruent Triangles
- Copying a triangle with compass and straightedge or ruler
- Equiangular - math word definition
- Equilateral - math word definition
- Euler line
- Heron's formula - triangle area given three sides
- HL Congruent Triangles
- How to construct (draw) a circle through the 3 vertices of a triangle with compass and straightedge or ruler
- How to construct (draw) a triangle given three sides
- How to construct (draw) a triangle given two angles and the included side
- How to construct (draw) a triangle given two sides and the included angle
- How to construct (draw) an equilateral triangle with compass and straightedge or ruler
- How to construct (draw) circumcenter of a triangle with compass and straightedge or ruler
- How to construct (draw) the incircle of a triangle with compass and straightedge or ruler
- How to construct (draw) the centroid of a triangle with compass and straightedge or ruler
- How to construct (draw) the incenter of a triangle with compass and straightedge or ruler
- How to construct (draw) the medians of a triangle
- How to construct (draw) the orthocenter of a triangle
- How to construct (draw) a 30-60-90 triangle with compass and straightedge or ruler
- How to construct (draw) an isosceles triangle given base and a side
- How to construct (draw) an isosceles triangle given base and altitude with compass and straightedge or ruler
- Hypotenuse - math word definition
- Isosceles triangle - math word definition
- Median of a triangle - math word definition
- Obtuse triangle definition
- Orthocenter of a triangle - math word definition
- Perimeter of a triangle
- Points of concurrency
- Pythagorean Theorem - math word definition
- Pythagorean Theorem Proof
- Pythagorean triples triangle definition
- Relationship of area and perimeter of a triangle
- Relationship of side lengths and angles of a triangle
- Right triangle definition
- SAS Congruent Triangles
- SAS Triangle similarity test
- Scalene triangle - math word definition
- Similar Triangles
- Solving Triangles
- Solving Triangles using Trigonometry
- SSA doesn't work
- SSS Congruent Triangles
- SSS Triangle similarity test
- The Law of Cosines
- The Law of Sines
- Triangle Centers Overview
- Triangle centroid definition
- Triangle Circumcenter definition
- Triangle exterior angles definition
- Triangle incenter, description and properties
- Triangle incircle definition
- Triangle inequality theorem
- Triangle interior angles definition
- Triangle midsegment - math word definition
- Triangle Quiz 1
- Triangle similarity, ratios of area
- Triangle similarity, ratios of parts
- Triangles of a Polygon
- Trigonometry - math word definition
- Volume of a triangular prism
Trigonometry
- Trigonometry - Math word definition - Math Open Reference
- Angle definition and properties (Trigonometry)
- Calculus - Derivative at a Point
- Calculus - Table view of the Derivative
- Calculus - trigonometric Functions
- Cosine - math word definition
- Coterminal - math word definition
- Graph of the Cosine function - Trigonometry
- Graph of the Sine function - Trigonometry
- Graph of the Tangent function - Trigonometry
- Initial side - math word definition - Trigonometry
- Introduction to the 6 trigonometry functions
- Quadrantal angle - math word definition - Trigonometry
- Secant function (sec) - Trigonometry
- SOHCAHTOA - math word definition - Trigonometry
- Solving Triangles using Trigonometry
- Standard position of an angle definition - Trigonometry
- Terminal side definition - Trigonometry
- The sine function - math word definition
- The tangent function in right triangles - Trigonometry
- Trigonometry - math word definition
- Trigonometry identities
- Trigonometry Overview
- Trigonometry problems - Slant distance
- Trigonometry problems - Slope angle
Triples
- Triples - Math word definition - Math Open Reference
- Pythagorean triples triangle definition
Undecagon
- Undecagon - math word definition
Velocity
- Velocity - Math word definition - Math Open Reference
- Calculus - Approximating Distance Traveled
- Calculus - Approximating Distance Traveled Using a Graph
- Calculus - Instantaneous Velocity
- Calculus -Average velocity and speed
Vertex
- Vertex - math word definition
- Angle - Math word definition
- Quadratic curve and graph display (vertex form)
- Triangle definition and properties
Vertical
- Vertical - math word definition
- Vertical Angles definition
- Vertical line definition. (Coordinate Geometry)
Vertices
- Vertices - Math word definition - Math Open Reference
- Vertex - math word definition
Video
- Video - Math word definition - Math Open Reference
- Video: Example - finding area of a trapezoid given bases, legs and altitude
- Video: Example - finding area of a trapezoid given bases, one leg and two angles
- Video: How the formula for the area of a trapezoid is derived
- Video: How to construct (draw) a perpendicular from a line through a point
- Video: Video: Example - finding a base of a trapezoid given area, one base and altitude
Volume
- Volume - Math word definition - Math Open Reference
- Calculus - Maximizing volume
- Calculus - Volumes of Known Cross Sections
- Calculus - Volumes of Revolution
- Volume of a cube
- Volume of a cylinder
- Volume of a pyramid
- Volume of a right cone
- Volume of a sphere
- Volume of a triangular prism
Worksheet
- Worksheet - Math word definition - Math Open Reference
- List of construction worksheets
- Worksheet - Bisect an angle
- Worksheet - Circle through 3 points
- Worksheet - Construct 30-60-90 triangles
- Worksheet - Construct a 30 degree angle
- Worksheet - Construct a 45 degree angle
- Worksheet - Construct a 60 degree angle
- Worksheet - Construct a 90 degree angle
- Worksheet - Construct a copy of a given angle
- Worksheet - Construct a copy of a given line segment
- Worksheet - Construct a copy of a given triangle
- Worksheet - Construct a hexagon given one side.
- Worksheet - Construct a hexagon inscribed in a circle
- Worksheet - Construct a parallel through a point
- Worksheet - Construct a pentagon inscribed in a circle
- Worksheet - Construct a perpendicular from a point on the line
- Worksheet - Construct a perpendicular through a point
- Worksheet - Construct a tangent through a point on the circle
- Worksheet - Construct a triangle given one side and two adjacent angles
- Worksheet - Construct a triangle given three sides
- Worksheet - Construct a triangle given two sides and the included angle measure
- Worksheet - Construct equilateral triangle
- Worksheet - Construct incenter of a triangle
- Worksheet - Construct incircle of a triangle
- Worksheet - Construct isosceles triangle (given base and altitude)
- Worksheet - Construct isosceles triangle (given base and side length)
- Worksheet - Construct median of a triangle
- Worksheet - Construct tangent through a point
- Worksheet - Construct the centroid of a triangle
- Worksheet - Construct the circumcenter of a triangle
- Worksheet - Construct the circumcircle of a triangle
- Worksheet - Divide a line segment into N parts
- Worksheet - Draw an ellipse inside a rectangle
- Worksheet - Draw angles with a protractor
- Worksheet - Find the foci of a given ellipse
- Worksheet - Finding center of a circle
- Worksheet - Finding center of a circle - II
- Worksheet - Orthocenter of a triangle
- Worksheet - Perpendicular from endpoint of a ray
- Worksheet - Perpendicular line bisector
- Worksheet - Using a protractor to measure angles
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