Who was Pythagoras and what did he do?
Pythagoras in short was a Math genious he invented the Pythagorean theorem which states that: “In any right triangle, the area of the square whose side is the hypotenuse (the side of a right triangle opposite the right angle) is equal to the sum of areas of the squares whose sides are the two legs (i.e. the two sides other than the hypotenuse).