Octagon
A hexagonal prism.
An hexagonal cross-section prism has 8 faces, 18 edges and 12 vertices
An octagonal pyramid
It is octagonal prism
Two polyhedrons have 18 edges: truncated tetrahedron and hexagonal prism.
a shape that has 9 faces
there are none
Octagon
A hexagonal prism
A hexagonal prism.
An hexagonal cross-section prism has 8 faces, 18 edges and 12 vertices
Hexagonal Prism
corn
It is octagonal prism
An octagonal pyramid
the shape that has 8 faces , 18 edges , and 12 vertices is simply a hexagonal prism not a pyramid my butt :P