Vertices, Edges, and Faces of a Solid

Definitions

Solid shapes have attributes like face, vertices, edges that describe them.

Individual flat surfaces are called faces. Faces meet in straight lines called edges and points called vertices.

Edges − The line segments that form the skeleton of the 3D shapes are called edges.

Faces − Flat surfaces enclosed by edges are called faces. A face of a solid shape is a plane or 2d figure.

Vertices − The corners where the edges meet are called vertices.

A rectangular prism has 6 faces 8 vertices and 12 edges.

A square pyramid has 5 faces 5 vertices and 8 edges.

Example 1

Determine the faces, vertices and edges of the following shape.

Solution

Step 1:

The given shape is a square pyramid.

Step 2:

It has 5 faces, 5 vertices, and 8 edges.

Example 2

Determine the faces, vertices and edges of the following shape.

Solution

Step 1:

The given shape is a cylinder.

Step 2:

It has 2 faces, 0 vertices, and 0 edges.