What did pothageris figgure out?

Pythagoras, an ancient Greek philosopher and mathematician, is best known for formulating the Pythagorean theorem, which relates to right triangles. The theorem states that in a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides. This fundamental principle has far-reaching implications in mathematics, geometry, and various fields of science and engineering. Pythagoras also contributed to concepts in number theory and the philosophy of mathematics.