Posted by lily on Sunday, June 8, 2014 at 9:36pm.
A polyhedron has 6 faces and 4 vertices. Use Euler's formula to calculate the number of edges.

math  Reiny, Monday, June 9, 2014 at 12:08am
Euler said:
V + F  E = 2
so if
4 + 6  E = 2
E = 8
E = 8
It has 8 edges