Cool visual explanation of the Pythagorean Theorem
Quick Return Motion Mechanism
himmeli - Google Search
United Art and Education Art Project: Learn how to create a striking Himmeli (a traditional Finnish ornament) Star Mobile using straws and string!
Hinged dissection - triangle to square
Pythagoras proof The square on the hypotenuse equals the squares on the other two sides
Pythagoras’ theorem (a2+b2=c2)