They all came up with elegant proofs for the famous Pythagorean theorem, the rule that says for a right triangle, the square of one side plus the square of the other side is equal to the square of the hypotenuse.
他们都为著名的毕达哥拉斯定提出了优雅的证明,这条规则说对于直角三角,一侧的平方加上另一侧的平方等于斜边的平方。