Pythagorean Theorem


Intro

Theory

Proof

Interactive Proof

History

Books



Playground

Rapunzel

Dido's Problem

Pythagoras

Trigonometry

Smart Joe

Fuzzy Logic

Cryptography

Mathematicians



Look at this magic proof to convince you that the Pythagorean theorem works for every right triangle. Move your mouse over the purple square to change the triangles.


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