Garfield's Proof

This app allows you to explore the algebraic proof offered by James A. Garfield, the twentieth president of the United States. He discovered this proof five years before he became the President.

Tags: Pythagorean-Theorem, algebraic-proof, area, middle-school

Bhaskara’s Proof

This app allows you to explore algebraic proof by the ancient Hindu mathematician Bhaskara, who used the properties of similarity to prove the theorem.

Tags: Pythagorean-Theorem, algebraic-proof, right-triangle, middle-school, similarity, ratio