Pythagoras
Pythagoras was a man mostly famous for his mathematical skills. He was born on the island of Samos in 569 BC. One of Pythagoras' greatest discoveries was finding out the Pythagoras theorem. It is: a2+b2=c2. It helped Greeks advance in math knowledge and mostly math formulas. (At the bottom of this page, go to see a video about Pythagoras and his invention!)