Definition:Pyramid/Apex

Definition

 * Pyramid.png

The vertex of a pyramid which is the common vertex of its triangular faces is called the apex of the pyramid.

In the above diagram, $Q$ is the apex.

Also known as
The apex of a pyramid is seen in some sources (for example ) as vertex.

Also see

 * Definition:Apex of Tetrahedron: all the faces of a tetrahedron are triangular, so this definition cannot apply as it stands.