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Faces, Vertices and Edges

If F is the n...

Question

If F is the number of faces, V is the number of vertices and E is the number of edges of the given solid, then, F + V - E = ___.

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Solution

Number of faces = 8
Number of vertices = 6
Number of edges = 12
F + V - E = 8 + 6 - 12

= 2

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