QuadrilateralAlso tetragon, quadrangle
From Latin: quadri- "four" + latus "side"
line segments linked end to end to create a closed figure.
A 4-sided polygon
Drag the orange dots on each vertex
to reshape the quadrilateral.
The quadrilateral is any 4-sided polygon.
But it is the parent of a whole family of figures, each with their own distinct names and characteristics.
See also Tetragon.
Quadrangle ("four angles") is another name for a quadrilateral.
However, it is a word often used for an open space where people gather, say on a school or university campus.
In this case the quadrangle (or "quad") is usually a rectangle or square.
Types of quadrilateral
Other polygon topics
Types of polygon
Area of various polygon types
Perimeter of various polygon types
Angles associated with polygons
(C) 2011 Copyright Math Open Reference. All rights reserved