Question

The common endpoint of an angle is called
A. vertex
B. zero
C. end point
D. none of these

Answer 1

Hint: We will consider the basic diagrams of angles and rays to solve this question. We will look into the formation of angles and then select the correct option accordingly.

Complete step-by-step answer:
It is given in the question that we have to find the name of the common end point of an angle. To solve this question, we shall consider the basic concepts of angles and rays. Basically, the angle is formed by two rays with a common endpoint. And the rays are the straight lines having no end points. For example sun rays.

This is an example of a ray because it has no end point.
The two rays are called the arm of the angle and the common end point is called the vertex of the angle, as shown in the figure below.

Therefore, option (A) is the correct answer.

Note: Generally the students get confused between the option (A), that is vertex and option (C), that is the end point. They may assume that the common endpoint of an angle is called the end point, but that is wrong. Thus, it is recommended to take reference of the basic definition of angles in order to avoid such mistakes.