Pythagoras's+Theorem

Good pages on Pythagoras's Theorem

Mathsisfun Math.com Mathsisfun Proof Mathcentre [|Darth Vader explains] [|Not Darth Vader explains]

Video of proof [|A Different Video Proof]

[|Water Proof] [|Pythagoras was wrong!!!]

__Using Pythagoras in real life__ For navigation at sea as a means to measure the visible horizon

A stretchy right angled triangle