## How to Find the Area of a Trapezoid

We have learned how to calculate the areas of a **square, rectangle**, **parallelogram**, and **circle**. In this post, we are going to learn how to find the area of a trapezoid. This is the first post of **Finding the Area of a Trapezoid Series**.

A trapezoid is a polygon whose exactly one pair of sides are parallel*. The figure below is a trapezoid where sides *a* and *b* are parallel.

Notice that if we make another trapezoid which has the same size and shape as above, flip one trapezoid, and make one pair of the non-parallel sides meet, we can form the figure below. That figure is a parallelogram. Can you see why? » Read more