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F = 12 (because of the name)

E = 12 * 5 / 2 = 30 (because each face is a pentagon)

V = 12 * 5 / 3 = 20 (same reason above)

Note that F - E + V = 12 - 30 + 20 = 2 (Euler's Equation)

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12y ago

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