For the​ polyhedron, use​ Euler's Formula to find the missing number.

Question

​faces: __
​edges: 11
​vertices: 8

Answer 1

Using Euler's Formula for polyhedra:
F + V - E = 2
Plugging in the given numbers:
F + 8 - 11 = 2
F - 3 = 2
F = 5

Therefore, the missing number of faces is 5.