This could be the most deliciously geeky animated GIF ever created. Just in case you didn't believe that Pythagoras' Theorem worked, you now have no reason to doubt it whatsoever. [Chart Porn]
For the two or three people left on earth who haven't seen this before:
The Planes Indians practiced polygamy, and one chief had three squaws.
The first squaw lived in a teepee of elk hide, the second in a teepee
made of buffalo hide, and the youngest in a teepee of hippopotamus hide.
The chief slept with each wife on the eve of his great hunting trip.
He was gone nine moons and when he returned, he went into the elk hide
teepee and found that his wife had borne him a son. Likewise, in the
buffalo hide teepee, that squaw, too, had borne him a son. So, imagine
his surprise when he found twin baby boys in the hippopotamus hide
This just proves that …
The squaw of the hippopotamus is equal to the sons of the squaws of the other two hides.