# Solution #100: Where does the square go?

When the two largest pieces are stitched, each small square that is cut by the
diagonal line becomes a trifle higher than it is wide. This means that the
large square is no longer a perfect square. In has increased in height by an
area that is exactly equal to the area of the hole.

Source: Gardner, Martin

Categories: Geometry and Space, Trick, Favorite

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