Discover more at www.ck12.org: http://www.ck12.org/algebra/Solving-Equations-Using-the-Pythagorean-Theorem/

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:

- Graphs of Square Root Functions:

http://www.ck12.org/algebra/Graphs-of-Square-Root-Functions/ -
Shifts of Square Root Functions:

http://www.ck12.org/algebra/Shifts-of-Square-Root-Functions/ -
Raising a Product or Quotient to a Power:

http://www.ck12.org/algebra/Raising-a-Product-or-Quotient-to-a-Power/ -
Simplification of Radical Expressions:

http://www.ck12.org/algebra/Simplification-of-Radical-Expressions/ -
Applications Using Radicals:

http://www.ck12.org/algebra/Applications-Using-Radicals/ -
Radical Equations:

http://www.ck12.org/algebra/Radical-Equations/ -
Equations with Radicals on Both Sides:

http://www.ck12.org/algebra/Equations-with-Radicals-on-Both-Sides/ -
Pythagorean Theorem and its Converse:

http://www.ck12.org/algebra/Pythagorean-Theorem-and-its-Converse/ -
Solving Equations Using the Pythagorean Theorem:

http://www.ck12.org/algebra/Solving-Equations-Using-the-Pythagorean-Theorem/ -
Applications Using the Pythagorean Theorem:

http://www.ck12.org/algebra/Applications-Using-the-Pythagorean-Theorem/ -
Distance Formula:

http://www.ck12.org/algebra/Distance-Formula/ -
Midpoint Formula:

http://www.ck12.org/algebra/Midpoint-Formula/

Watch the whole series of CK-12’s Algebra I videos: https://www.youtube.com/playlist?list=PLhWx3LZhlpseAnFUUMJDWvwKRe2yM3XH6