Question

Um poliedro convexo tem 7 vértices e 8 faces. Quantas arestas tem esse poliedro?

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Answer 1

$> resolucao \\ \\ \geqslant \: relacao \: \: de \: \: euler \\ \\ v + f = a + 2 \\ 7 + 8 = a + 2 \\ 15 = a + 2 \\ a = 15 - 2 \\ a = 13 \\ \\ \geqslant \leqslant \geqslant \leqslant \geqslant \leqslant \geqslant \geqslant \geqslant$