Related Words

RAY

Definition of Ray

A ray is a part of a line that begins at a particular point (called the endpoint) and extends endlessly in one direction. A ray is also called half-line.

How do we name a Ray?

A ray is named based on the direction in which it extends.
A ray is named with its endpoint in the first place, followed by the direction in which its moving.
In the example shown below, P is the endpoint and Q is the point towards which the ray extends. So, the ray PQ is represented as:

Look at another example. This ray will be called QP as it starts at Q and extends towards P. So, the ray QP is represented as:


Video Examples: Rays


Solved Example on Ray

Ques: Which of the following is a ray?

Choices:
  • A.
  • B. 10.3
  • C. - 3.523...
  • D. -

Correct Answer: B

Solution:

  • Step 1: The definition of a ray states that "A ray is a part of a line that begins at a particular point (called the endpoint) and extends endlessly in one direction."
  • Step 2: As per the defition of a ray, among the figures given only Figure 2 represents a ray

Translate :