Encarta: Pythagoras: Encyclopedia article provides an introduction to the Greek philosopher and mathematician.Pythagoras: Student-written biography focuses on his most significant achievements.Pythagoras of Samos: Detailed biography, including pictures, from the MacTutor History of Mathematics archive.The Proof: Pythagorean Puzzle: A fun look at the man and one of his best-known equations. Includes Shockwave demonstration. From Nova Online.The Theorem of Pythagoras: Brief description and proof of the Pythagorean theorem.