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

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

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

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.

Rectangular prism is also called a ________.

Square prism is also called a _______.

Regular pyramid a pyramid is said to be a regular pyramid if its base is a regular figure.

Regular polygon a polygon is called a regular polygon if all its sides are equal and all its angles are equal.

Define regular, irregular, convex and concave polygons.

The name of three-sided regular polygon is __________.