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Properties of Quadrilaterals

Properties of Quadrilaterals

Author: Patrick Beal

You will be able to answer the following questions:

  1. Identify the properties of special quadrilaterals
  2. Compare the properties of different quadrilaterals
  3. Classify quadrilaterals by specific properties

A quadrilateral is any polygon with 4 sides. There are 7 special types of quadrilaterals: Trapezoid, Isosceles Trapezoid, Parallelogram, Rectangle, Rhombus, Square, and Kite. Each quadrilateral has its own set of unique properties. Just as people have properties that describe them (such as tall, short, brown hair, or blue eyes), each quadrilateral has properties that uniquely identify it. By the end of this lesson, you should know when sides are congruent or parallel, when angles are congruent or bisected, and when diagonals are congruent, perpendicular, or bisected.

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A visual lesson about the properties of quadrilaterals.

Source: Patrick Beal

Parallelogram Examples

A few examples demonstrating how to apply the properties of parallelograms to solve for unknown measures.

Source: Patrick Beal

Interactive Quadrilateral Website

Now that you have read about the properties of quadrilaterals, try looking at the links on this page to see the properties in action! The activities will only work on a computer, not on any mobile devices (sorry).

Source: Patrick Beal

Quadrilateral Review

A Brief review of the properties of quadrilaterals.

Source: Patrick Beal