Solution
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Divide the 12x12 square on the left into two pieces so that to rearrange them into the 9x16 the rectangle on the right. You can draw the square using a square grid as shown in the illustration, or simply download the Print 'n' Play PDF version for printing. More comprehensive research on this and similar dissection puzzles can be found in the Dissections: Plane & Fancy book by Greg Frederickson.
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Last Update March 5, 2004
