Can you construct a polyhedron that violates the Euler characteristic?

Answer 1

When we apply Euler's rule to polyedra, we generally term it the Euler characteristic. We'll find that every polyhedron will follow the rule. That rule is V - E + F= 2, where V = number of vertices, E = number of edges, and F = number of faces. The formula can appear in different forms, as you might guess, and just one is E + F - 2 = V. That said, no, it is not possible to construct a polyhedron that violates the Euler characteristic.