Geometry: Pythagorean theorem

Pythagorean theorem was proven by an ancient Greek geometer named Pythagoras and says that for a right triangle with legs A and B, and hypotenuse C , , . Lessons under this topic contain proofs of this legendary Pythagorean theorem. See also wikipedia proofs on Pythagorean theorem and the lesson on how to generate Pythagorean triples (natural numbers that are sizes of direct triangles).

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