Octagonal prism.
An octagonal prism has a base with eight edges.
A rectangular prism has 12 edges and 8 vertices.
8 edges
A rectangular prism has 12 edges and 8 vertices.
There are 12 edges and 8 corners in a rectangular prism
triangle
8 edges 6 sides
Well you have an octagon on each end of the prism, and octagons have 8 sides, so 8 x 2 is 16, and then you have edges connecting the corners of the octagons at the end. There are 8 corners in an octagon, so that's 8 more edges. 16 + 8 = 24 total edges. An n-gonal prism has 3n edges.
8
it has 8
8
Yes