Puzzle transforming a square to a triangle. The square is one foot on a side. The triangle sides are not equilateral (but close enough to fool the eye). The sides increase by 1/8 of an inch from smallest to largest so the longest is 1/4 inch longer than the smallest size. Hinge points are show as well as correct rotation direction. Key square side measurements are shown. The other key measurements are half points on the square sides.
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