Proof of Pythagorean Theorem

Adjust the two black points to change the size of the triangle and the diamond to change its shape. Then use the slider to see a proof of the Pythagorean Theorem. To change the viewing window, hold the shift button and left-click to drag the graph or use the scroll wheel to zoom in/out. You can also adjust the axes by holding the shift button and left-click on the axis you want to change.