Thursday, December 31, 2009 at 1:19pm.
a polyhedron has 36 edges and 21 faces, how many vertices does it have?
You can use Euler's polyhedral formula:
V+F-E = 2
V=number of vertices
F=number of faces
E=number of edges
E=36 and F=21 into the polyhedral formula and solve for V.
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