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What Fraction of a Soccer Ball Is Covered with Pentagons?

by P. K. Aravind (Worcester Polytechnic Institute)

This article originally appeared in:
Mathematics Magazine
February, 2008

Subject classification(s): Solid Geometry | Geometry and Topology
Applicable Course(s): 4.9 Geometry

The author uses elementary geometric methods to calculate the fraction of the area of a soccer ball covered by pentagons.

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