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Constructing a Regular Pentagon with Ruler and Compass

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This shows a step-by-step ruler and compass construction of a regular pentagon. The construction is due to H. W. Richmond, "A Construction for a Regular Polygon of Seventeen Sides," Quart. J. Pure Appl. Math., 26, 1893 pp. 206–207.

Contributed by: Oleksandr Pavlyk (March 2011)
Open content licensed under CC BY-NC-SA

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