Supplementary mathematics/Prism
In spatial geometry, a prism (which is derived from the Greek word πρίσμα, which means prisma) is a completely three-dimensional shape, and it is said to be a member of the polyhedron, which is made of two bases and faces. Prisms are known based on their bases. As a prism with a fourteen-sided base, it is called a fourteen-sided prism.
The prism was described for the first time by Euclid and in the 11th book of his geometry he described it like this (solid shapes formed by two opposite, equal and parallel planes are called prisms)
Of course, the definition of this type of theorem is extremely complicated to describe the prism, which has become the subject of confusion and controversy among geometers and subsequent geometers due to the lack of a rule definition.