In this lesson, we will learn how to apply the Pythagorean Theorem in a square to find the length of its side, if we know the length of its diagonal.

This lesson is based on the following common core standard:

**CC 8EE7**

Apply the Pythagorean Theorem to determine unknown side lengths in right triangles in real-world and mathematical problems in two and three dimensions.

Check out this fun Pythagorean Theorem Jeopardy game.

Return from the Pythagorean Theorem Application to Math Play.