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A classical riddle
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Solution of the riddle
The Curry triangle
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The hypotenuses of the blue and pink triangles aren't aligned.
Therefore, the global picture is not a triangle but a pentagon.

The left and right sides of the first pentagon forms an angle toward the inside.
For the second pentagon the angle is toward the outside.

The difference between areas of the 2 pentagons equals the surface of the red rectangle.


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Last edit for this page: 12/26/2008 (03h34pm)