The Pythagorean Theorem with Variables (Algebra I)

Here you'll learn how to apply the Pythagorean Theorem to find the unknown side lengths of right triangles.

This video demonstrates a sample use of the Pythagorean Theorem with variables.

This is part of CK-12’s Algebra I: Algebra and Geometry Connections. See more at:

1. Graphs of Square Root Functions:

2. Shifts of Square Root Functions:

3. Raising a Product or Quotient to a Power:

4. Simplification of Radical Expressions:

5. Applications Using Radicals:

6. Radical Equations:

7. Equations with Radicals on Both Sides:

8. Pythagorean Theorem and its Converse:

9. Solving Equations Using the Pythagorean Theorem:

10. Applications Using the Pythagorean Theorem:

11. Distance Formula:

12. Midpoint Formula: