A prism is a solid shape that has the same cross-section all the way through. These three shapes are prisms. The first has a circular cross-section. The second has a rectangular cross-section.

A prism is a 3D shape which has a constant cross section - both ends of the solid are the same shape and anywhere you cut parallel to these ends will give you the same shape. For example ...

Explains the concepts of volume for various geometric solids, including prisms, pyramids ... emphasizing the relationships between these shapes. For example, the volume of a pyramid is one ...