Wolfram Demonstrations Project

A regular pentagon is cut into three pieces that can be reassembled into a parallelogram. Next, the parallelogram is dissected into a square.

This dissection was given by Robert Brodie (1891) and is an improvement on Busschop's pentagon-to-square dissection.

G. N. Frederickson, Dissections: Plane & Fancy, New York: Cambridge University Press, 2002 p. 120.

Contributed by: Izidor Hafner

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Brodie's Pentagon-to-Square Dissection