Answer:
12
Step-by-step explanation:
Euler's formula for polyhedra states
F + V - E = 2
where F is faces, V is vertices and E is edges
Here F = 6, V = 8, thus
6 + 8 - E = 2, that is
14 - E = 2 ( subtract 14 from both sides )
- E = - 12 ( multiply both sides by - 1 )
E = 12 ← number of edges
