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January 30, 2015

January 30, 2015

Posted by **Kay Kay** on Thursday, December 31, 2009 at 1:19pm.

thank you

- math -
**MathMate**, Thursday, December 31, 2009 at 1:49pmYou can use Euler's polyhedral formula:

V+F-E = 2

V=number of vertices

F=number of faces

E=number of edges

Substitute

E=36 and F=21 into the polyhedral formula and solve for V.

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