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Feb 22, 2011 · Pythagoras (569-475 BC) is recognized as the world's first mathematician. He was born on the island of Samos and was thought to study with Thales and Anaximander (recognized as the first western philosophers). Pythagoras believed that numbers were not only the way to truth, but truth itself.
Pythagoreanism, philosophical school and religious brotherhood, believed to have been founded by Pythagoras of Samos, who settled in Croton in southern Italy about 525 bce. General features of Pythagoreanism.
Start with: a2 + b2 = c2. Put in what we know: 12 + 12 = c2. Calculate squares: 1 + 1 = c2. 1+1=2: 2 = c2. Swap sides: c2 = 2. Square root of both sides: c = √2. Which is about: c = 1.4142... It works the other way around, too: when the three sides of a triangle make a2 + b2 = c2, then the triangle is right angled.
