Question

If a convex polyhedron has 12 edges and 8 faces, then how many vertices does it have?

Answer 1

2
6
16
20

Answer 2

Use Euler's formula for this for a 3D figure. F + V = E + 2, where F is the number of faces, V is the number of vertices, E is the number of edges, +2! You have enough info to fill in the formula to find that the number of vertices is 6.