Definition: 1- Two faces are parallel to each other, the other faces are quadrangles, and the common edges of every two adjacent quadrangles are parallel to each other. The geometry surrounded by these faces is called a prism.

Definition 2—— A closed geometry whose upper and lower bottoms are parallel and congruent and whose sides are parallel and equal is called a prism.

Prism is a common three-dimensional polyhedron in geometry. If the bottom of a prism is n-sided, it is called an n-prism. For example, a triangular prism is a prism with a triangular bottom.

Extended data

Introduction to related terms of prism

1, prism

The prism is a transparent body with a triangular optical cross section. It is an optical instrument with a triangular cross section made of transparent material, and belongs to a dispersive prism. When polychromatic light passes through the prism, it can disperse polychromatic light.

2. Geometry

Also known as solid, it is one of the basic concepts of solid geometry. The concept of geometry comes from people's mathematical abstraction of various objects in the objective world. When people only consider the mathematical attributes such as the shape, size and positional relationship of an object, but not its physical, chemical, biological and social attributes, they get the concept of geometric body.

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