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ray
Get it right!
A ray is a part of a line which can be extended in one P Q
direction endlessly. The figure shows a ray,

QP . PQ

(because its initial point is P.)
As we can see in the given figure that a ray AB begins
from the point A and goes towards B. B is just a point on the ray, but it is not its end. This

ray is denoted by AB , where A is its initial point.

Light coming from a torch or a bulb can be considered as examples of rays.

practice time 7a

1. Name the following figures in two ways. One has been done for you.

Y A
N
M
(a) X (b) B (c) (d) P Q

Line segment XY

XY

2. How many line segments are used to form each of the following shapes? Name

them.

A D P G E J

(a) (b) (c) H K (d) F I

B C Q R I J G H

3. How many lines are there in the given figure? Name them.

A
H B
G C
O
F D
E

teacher’s Discuss with the students about the difference among a line, a line segment and a ray with the help of real-life
tip examples.

122 Mathematics-3