Prism
Definition of Prism
- A prism is a polyhedron consisting of two parallel, congruent faces called bases.
More about Prism
- A prism is named by the shape of its base.
- Triangular Prism: A Prism with triangular bases is a Triangular Prism.
- Rectangular Prism: A Prism with rectangular bases is a Rectangular Prism.
- Cube: A prism with square bases is a cube. All six faces of a cube are squares.
- Pentagonal Prism: A Prism with pentagonal bases is a Pentagonal Prism.
- Hexagonal Prism: A Prism with hexagonal bases is a Hexagonal Prism.
- Octagonal Prism: A Prism with octagonal bases is an Octagonal Prism.
Examples of Prism
- The following figure shows a few prisms.

Solved Example on Prism
An octagonal prism has ____.
Choices:
A. one vertex.
B. eight congruent faces and one base.
C. six congruent lateral faces.
D. eight lateral faces that are congruent.
Correct Answer: D
Solution:
Step 1: An octagonal prism has eight lateral faces that are congruent and two parallel congruent octagonal bases.
Related Terms for Prism
- Polyhedron
- Congruent
- Face
- Base
- Parallel
Additional Links for Prism