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SOLUTION TO 155. THE PENTAGON AND SQUARE. (2/5) 

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The pentagon is ABCDE. By the cut AC and the cut FM (F being the middle point between A and C, and M being the same distance from A as F) we get two pieces that may be placed in position at GHEA and form the parallelogram GHDC. We then find the mean proportional between the length HD and the _height_ of the parallelogram. This distance we mark off from C at K, then draw CK, and from G drop the line GL,

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