Move point A.[br][br]Slide the slider.

This work is motivated by Proof #5 at [url=http://www.cut-the-knot.org/pythagoras/index.shtml#5]http://www.cut-the-knot.org/pythagoras/index.shtml#5[/url].[br][br]You can read more about this proof at [url=https://maa.org/press/periodicals/convergence/mathematical-treasure-james-a-garfields-proof-of-the-pythagorean-theorem]https://maa.org/press/periodicals/convergence/mathematical-treasure-james-a-garfields-proof-of-the-pythagorean-theorem[/url][br]