### Home > GB8I > Chapter 5 Unit 6 > Lesson INT1: 5.2.2 > Problem5-71

5-71.

Monique and her dad built a hang glider together. After testing the new glider for safety, the glider was ready for the first big flight. Monique jumped off a tall sand dune and traveled in a diagonal line from the top of the dune toward the ground. She flew for $137$ feet and landed on level ground at a spot $105$ feet horizontally from where she took off. How tall was the sand dune?

What geometric shape is the dashed line making?

Since the information given shows different parts of a right triangle,
you can make use of the Pythagorean theorem to find the missing leg.