hex = six ---> so it has six faces plus a top and a bottom for faces = 8
It has 6 edges on the top, 6 on the bottom, and 6 on its sides: edges = 18
It has 6 vertices on the top and 6 on the bottom, vertices = 12
Euler's formula: V - E + F = 2 ---> 12 - 18 + 8 = 2
