Sleepy found a gemstone in the mine. It has 20 edges and 18 faces. How many vertices did the gemstone have?(1 point) Responses 12 vertices 12 vertices 4 vertices 4 vertices 34 vertices 34 vertices 10 vertices
The formula for calculating the number of vertices on a polyhedron is V + F - E = 2, where V is the number of vertices, F is the number of faces, and E is the number of edges.
Given that the gemstone has 18 faces and 20 edges, we can rearrange the formula to solve for V:
V = 2 + E - F
V = 2 + 20 - 18
V = 4
Therefore, the gemstone has 4 vertices.