Written in stone: the world’s first trigonometry revealed in an ancient Babylonian tablet by Daniel Mansfield and Norman Wildberger

27 08 2017

Read this article for the developing history of trigonometry and Pythagoras’ Theorem.


Look at this interesting proof of Pythagoras Theorem

19 12 2013

At the Hong Kong Science Museum I saw this proof of Pythagoras Theorem using liquid which moves between the sections. You can have the shapes in squares or semicircles.