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Euler's Polyhedral Formula

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Let P be any convex polyhedron, and let V, E and F denote the number of vertices, edges, and faces, respectively. Then V-E+F=2.

Observe!

Apply Euler's Polyhedral Formula on the following polyhedra:

\begin{tabular}{|c|c|c|c|}\hline Shape & Vertices & Edges & Faces\\ \hline Tetrahedron &4  &6 & 4 \\ ...

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