# Decomposition of Some Polygons to Iso-Penta Triangles

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Many figures, such as the pentagon, pentagram, and decagon, can be dissected into isosceles triangles where all three angles are multiples of . Such triangles are called iso-penta triangles.

Contributed by: Izidor Hafner (September 2013)

Open content licensed under CC BY-NC-SA

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## Details

Reference

[1] G. N. Frederickson, *Dissections: Plane & Fancy*, New York: Cambridge University Press, 1997 p. 212. www.cs.purdue.edu/homes/gnf/book.html.

## Permanent Citation

"Decomposition of Some Polygons to Iso-Penta Triangles"

http://demonstrations.wolfram.com/DecompositionOfSomePolygonsToIsoPentaTriangles/

Wolfram Demonstrations Project

Published: September 11 2013