My Definition

Key Characteristics

The following are true of a pyramid:

  • Its base is a polygon.

  • It is named for the shape of its base. For example, a pentagonal pyramid would have a pentagonal base.

  • Its lateral faces meet at the apex of the pyramid.

  • The lateral surface is made up of triangles.

  • The number of triangular lateral faces is equal to the number of sides forming the polygonal base.

  • It has faces, vertices, and edges that can be counted.

  • If a plane intersects the pyramid and is parallel to the base, the cross section is similar to the base.


A pyramid has one base and one apex, regardless of orientation.

Pyramid Activity


TEKS: 7(8)(A), 7(8)(B), 7(9)(A), 7(9)(D)