What is a prism in art

A prism is a three dimensional shape that has two bases that are parallel same size and shape

a prism is a three-dimensional shape that has two bases that are parallel and the same size and shape. The prism's sides are all parallelograms. A classic pup tent is a triangular prism. In optics, a prism is a piece of glass, quartz, plastic, or other material that can be used to refract light.