It is a prism with a pentagonal cross-section
10 vertices
A pentagon, like the building that houses the department of defense in Washington D.C.
All prisms have a face on each end. Additionally, they will have a number of faces corresponding to the number of sides on the polygon that is on an end. For a triangular prism, that's 2 + 3 = 5 faces. For a square prism, that's 2 + 4 = 6 faces. For your pentagon prism, that's 2 + 5 = 7 faces.
5 faces -- 3 rectangular and 2 triangular.
A rectangular pyramid has 5 faces and a rectangular prism has 6 faces.
A rectangular pyramid has 5 faces.
In 2-d a pentagon, in 3-d a rectangular pyramid.
A flat pentagon. Or some kind of circle pentagon breed...
A pentagonal prism has 10 vertices and 15 edges. In addition, it has 2 pentagonal bases and 5 rectangular faces.
Nothing
rectangular prism
It has 5 rectangular faces ans two pentagonal faces