The Pythagorean Theorem with Variables (Algebra I)

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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:

Watch the whole series of CK-12’s Algebra I videos:


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