Vertex

A vertex is a corner. More than one vertex are called vertices. A vertex is a point where two or more lines, curves, rays, or sides meet, and is often represented by letters such as , ,  and . 

For example, the vertex of an angle is the point where the two edges of the angle intersect, and a vertex of a cube is simply one of its corners—of which there are eight. 

The concept of vertex applies to both two-dimensional and three-dimensional geometrical objects. For example, a tetrahedron has four vertices, and a pentagon has five vertices.

 Related pages 

 Graph (mathematics)
 Vertex figure

 References 

Category:Geometry