# A Dissection Proof of Pythagoras's Theorem

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This Demonstration constructs a proof of Pythagoras's theorem, which states that in a right-angled triangle with adjacent sides of length and and hypotenuese of length , . Geometrically this says that the sum of the areas of the two squares of side and equals the area of the square of side . The proof works by splitting up the squares into pieces and matching pairs of equal area.

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Contributed by: Jon Perry (March 2011)

Open content licensed under CC BY-NC-SA

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