There can be a heptagonal prism or an octagonal prism, but there is no such thing as a hectagonal prism.
What kind of prism is it
Not sure how many a rectagular prism douse have but a rectangular prism does have 8 vertices.
It depends on what type of prism. Is it a rectangular prism, a triangular prism, etc?
The vertex of a prism is a corner along the side of the prism. There are 8 vertices on a rectangular prism.
how many faces does a pentagon prism have
Depends on what kind of prism it is.
A rectangular Prism has 12 edges.
A prism with 9 faces is a heptagonal prism. That has 14 vertices.
A rectangular prism has 12 edges but I don't know about a regular prism.
Infinitely many. Every possible triangle can be used to generate a triangular prism, and in each case, the prism can have any one of infinitely many lengths.
Fifteen on a pentagonal (not pentalgonal) prism.