3 ms·Yeah this is the high-school proof, just cut in half.by torginus 11mo agoYeah this is the high-school proof, just cut in half.amelius 11mo agoMaybe the high school proof was inspired by Garfield?torginus 11mo agoAfaik the ancient proof (the square inside a bigger square rotated by 45 degrees) comes from ancient Greece, so I guess Garfield can add 'time travel' to his list of discoveries.