Quadrilateral

Definition

A quadrilateral is a four-sided polygon.

Types of quadrilaterals

Kite

Main article: Kite


A kite is a quadrilateral with two pairs of adjacent congruent edges.

Cyclic Quadrilateral

Main article: Cyclic quadrilateral


A cyclic quadrilateral is a quadrilateral that is cyclic.

Parallelogram

Main article: Parallelogram


A parallelogram is a quadrilateral with two pairs of parallel edges.

Rhombus

Main article: Rhombus


A rhombus is an equilateral parallelogram.

Rectangle

Main article: Rectangle


A rectangle is an equiangular parallelogram.

Square

Main article: Square (geometry)


A square is any figure that is both a rectangle and a rhombus.

Introductory topics

Resources

Books

Intermediate topics

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