Lesson 10

Applications of the Pythagorean Theorem

Lesson Narrative

In this lesson students use the Pythagorean Theorem and its converse as a tool to solve application problems. In the first activity, they solve a problem involving the distance and speed of two children walking and riding a bike along different sides of a triangular region. In the second activity they find internal diagonals of rectangular prisms.

Learning Goals

Teacher Facing

  • Describe (orally) situations that use right triangles, and explain how the Pythagorean Theorem could help solve problems in those situations.
  • Use the Pythagorean Theorem to solve problems within a context, and explain (orally) how to organize the reasoning.

Student Facing

Let’s explore some applications of the Pythagorean Theorem.

Learning Targets

Student Facing

  • I can use the Pythagorean Theorem to solve problems.

CCSS Standards


Print Formatted Materials

Teachers with a valid work email address can click here to register or sign in for free access to Cool Down, Teacher Guide, and PowerPoint materials.

Student Task Statements pdf docx
Cumulative Practice Problem Set pdf docx
Cool Down Log In
Teacher Guide Log In
Teacher Presentation Materials pdf docx

Additional Resources

Google Slides Log In
PowerPoint Slides Log In