# 3.A: Properties of Quadrilaterals

- Page ID
- 31448

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## Overview

The purpose of this lesson is to identify key quadrilaterals and properties about their angles and sides.

This lesson will address the following CCRS Standard(s) for Geometry:

*7.G.6: Solve real-world and mathematical problems involving area, volume and surface area of two- and three- dimensional objects composed of triangles, quadrilaterals, polygons, cubes, and right prisms*

## Directions

- Take notes while watching videos below
- Go to http://wamap.org and log into our course to complete assignment 3.A with 80% or better.

### Do

Complete assignment 3.A with 80% or better at http://wamap.org

## Summary

In this lesson we have learned:

- The angles of a quadrilateral (four sides) add to 360
^{o} - Kites have two pairs of congruent sides that are consecutive
- Parallelograms are quadrilaterals with opposite sides parallel
- Opposite angles are congruent
- Consecutive angles are supplementary

- Rectangles are parallelograms with congruent (right) angles
- Rhombi are parallelograms with congruent sides
- Squares are parallelograms with congruent (right) angles and sides
- Trapezoids only have one set of parallel sides