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The Pythagorean theorem
Named after the Greek philosopher who lived nearly 2600 years ago, the Pythagorean theorem is as good as math theorems get (Pythagoras also started a religious movement). It's simple. It's beautiful. It's powerful.
Common Core Standards: 8.G.B.7, 8.G.B.8
Introduction to the Pythagorean Theorem
Pythagorean Theorem 1
Pythagorean Theorem 2
Pythagorean Theorem 3
Find the leg or hypotenuse of a right triangle using the Pythagorean theorem.
How to find the distance between lines using the Pythagorean Formula
Use the Pythagorean theorem to find the distance between two points on the coordinate plane.