A Regular Polygon with an Even Number of Sides Is the Union of Rhombuses
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If a regular polygon has an even number of sides, then it is the union of rhombuses.
Contributed by: Izidor Hafner (June 2013)
Open content licensed under CC BY-NC-SA
 G. N. Frederickson, Dissections: Plane & Fancy, New York: Cambridge University Press, 2002 pp. 10–11.