Right prism a prism is called a right prism if its lateral edges are perpendicular to its ends (bases). Otherwise it is said to be an oblique prism.

Triangular prism a prism is called triangular prism if its ends are triangles.

Regular prism a prism is called a regular prism if ends are regular polygons.

Right triangular prism a right prism is called a right triangular prism if its ends are triangles.

Right pyramid a pyramid is said to right pyramid if the perpendicular dropped from the vertex on the base meets the base at its central point i.e. the centre of the inscribed or circumscribed circle. In other words the vertex of the pyramid lies on the perpendicular to the base drawn through its centre. Otherwise the pyramid is called an oblique prism.

Height of a prism the perpendicular distance the ends of a prism is called the height of the prism.

In a prism the lateral faces need not be congruent

A prism is a polyhedron whose lateral faces are

Axis of a prism the straight line joining the centres of the ends of a prism is called the axis of the prism.