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Subject Index
Parts of a circle - pictorial index
Click on the diagrams below for more information.
Other circle topics
General
Circle definition
Radius of a circle
Diameter of a circle
Circumference of a circle
Parts of a circle (diagram)
Semicircle definition
Tangent
Secant
Chord
Intersecting chords theorem
Intersecting secant lengths theorem
Intersecting secant angles theorem
Area of a circle
Concentric circles
Annulus
Area of an annulus
Sector of a circle
Area of a circle sector
Segment of a circle
Area of a circle segment (given central angle)
Area of a circle segment (given segment height)
Equations of a circle
Basic Equation of a Circle (Center at origin)
General Equation of a Circle (Center anywhere)
Parametric Equation of a Circle
Angles in a circle
Inscribed angle
Central angle
Central angle theorem
Arcs
Arc
Arc length
Arc angle measure
Adjacent arcs
Major/minor arcs
Intercepted Arc
Sector of a circle
Radius of an arc or segment, given height/width
Sagitta - height of an arc or segment
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