Question

What solid figure has eight edges and five vertices?
rectangular prism
square pyramid
pentagonal prism
triangular pyramid

Answer 1

One Euler's formulas states the for a polyhedron, the number of vertices + the number of faces = the number of edges + 2.

V + F = E + 2
In your problem, V = 5 and E = 8. Subsitute into the equation and solve for F. Post your answer, and we'll check it.

Answer 2

@flame619 --> And, F = ? :)