Prism is a common three-dimensional polyhedron in geometry, which refers to a closed geometry with parallel and congruent upper and lower bottoms and parallel and equal sides. If the bottom of a prism is n-sided, then the prism is called an n-prism. For example, a triangular prism is a prism with a triangular bottom.

Prism example

Prism is the simplest kind of polyhedron, and some common objects, such as prisms, square bricks and bolts, are all prismatic.

Extension:

Geometry is the study of spatial structure and properties. It is one of the most basic research contents in mathematics, which has the same important position as analysis and algebra, and has a very close relationship. Geometry has a long history and rich contents. It is closely related to algebra, analysis and number theory.

differential geometry

Geometric thought is the most important thought in mathematics. The temporary development of each branch of mathematics tends to geometry, that is, to explore various mathematical theories with geometric viewpoints and thinking methods. Common theorems are Pythagorean Theorem, euler theorem Theorem and Stewart Theorem.

In order to introduce the theoretical measurement (length, area, etc. ), we need to introduce calculus to analyze the properties of space bending locally. Differential geometry came into being.