9 Edges
9
5
square
Six or 3 at each end
4 faces, 6 edges and 4 vertices.
A Square prism has a square base a triangular has a trianguler base
A triangular prism has 9 edges!
There are 30 edges on a decagonal prism.
A heptagonal prism has 20 edges.
A rectangular Prism has 12 edges.
A square prism has 12 edges.
A Pentagonal Prism has 15 edges.