The common end point of the sides (or arms) of an angle is the vertex of the angle.
The common end point of the sides of an angle is called the vertex. The sides are referred to as rays.
Angle
Placing a question mark at the end of a phrase does not make it a sensible question. Try to use a whole sentence to describe what it is that you want answered.I assume the question is about a "common END point", and although you have not said so, what you want is to know what it is called. If that is the case, then the answer is an angle.
vertex
The common end point of the sides (or arms) of an angle is the vertex of the angle.
The point of the angle is called the vertex.
The common end point of the sides of an angle is called the vertex. The sides are referred to as rays.
A vertex ■
Angle
An angle.
They are the arms of an angle.
< the point where the two rays meet is called a vertex.
An angle.
Straight Angle
vertex
The point in which all the angle bisectors intersect is called the incenter.