# Understanding quadrilaterals

Contents

A quadrilateral is a four-sided polygon with four angles. There are many kinds of quadrilaterals. The five most common types are the parallelogram, the rectangle, the square, the trapezoid, and the rhombus. In this chapter we will learn about polygons, different types of quadrilaterals, and the special case of parallelograms!

4 exercises available

Polygons are many-sided figures, with sides that are line segments. Polygons are named according to the number of sides and angles they have. The most familiar polygons are the triangle, the rectangle, and the square. In this topic we will learn about the exterior angle property, interior angle property, and we will also practice with some exercises related to polygons.

In this section we will learn about how to calculate the sum of the measure of the exterior angles of a polygon.

A quadrilateral is a four sides polygon with 4 angles. In this topic we will learn about the different kinds of quadrilaterals that can exist!

Not all things with four sides have to be squares or rectangles! We will now broaden our understanding of quadrilaterals.