Describe each base and name each prism.

The two bases of a three dimensional figure are four-sided polygons with two pairs of opposite congruent sides and four right angles.
The two bases of a three dimensional figure are three-sided polygons with congruent sides and angles.
The two bases of a three dimensional figure are five-sided polygons with congruent sides and angles.

The three dimensional figure with four-sided bases is a rectangular prism.

The three dimensional figure with three-sided bases is a triangular prism.
The three dimensional figure with five-sided bases is a pentagonal prism.