Wolfram Demonstrations Project

This three-piece dissection of a triangle to its mirror image is analogous to Gerling's 3D dissection of a tetrahedron.

G. N. Frederickson, Dissections: Plane & Fancy, New York: Cambridge University Press, 1997, 2002 pp. 24, 231.

Contributed by: Izidor Hafner

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Common Core State Standards for Mathematics

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Dissection of a Triangle to Its Mirror Image II