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Perigals_dissection.png

22 March 2017

There are many ways to prove Pythagoras' theorem.One of my favourites is Perigal's dissection, where you cut out the square on the shortest side, then cut out the square on the middle length side, cut it into 4 equal pieces and stick them all onto the square on the hypotenuse to show equal total area.

22 March 2017

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