Find the number of edges on this polyhedron. First count the number of faces Fand vertices V. Then use Euler's formula: F+ V= E

Question

Find the number of edges on this polyhedron. First count the number of faces Fand vertices V. Then use Euler's formula: F+ V= E + 2. Solve for E. Type your answer and then click or tap Done. The number of edges on this octahedron is

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