What is the definition of vertex angle?

Answer by  user21 (361)

It is the point at which two lines intersect, otherwise known as a vertex, creating an angle. It may measure at any value greater than 0 and less than 180 degrees.

Answer by  Madhavi (29)

A point where two lines or line segments meet or intersect is vertex. A triangle has three vertices. A triangle containing two equal sides that are the same length is an isosceles triangle, the angle formed by the two legs of equal length. The vertex angle is always opposite the base.