Page 108 - Maths Skill - 3

106 Maths

3. Name the line segments in each of the following figures.

(a) P Q (b) K J

F I
R
G H

4. Mark two points P and Q on your notebook. How many line segments can you
draw passing through both these points?

5. In the given figure, identify the following:
(a) Horizontal lines A D

(b) Vertical lines
(c) Slanting lines B C

6. Fill in the blanks:

(a) A line segment has _______________ end points.
(b) A line segment has _______________ length.

(c) A dot (.) represents a _______________ .
(d) A point shows an exact _______________ .

(e) A ray has a _______________ but no_______________.
(f) A line segment is a _______________ of a line.

Measuring a Line Segment

We measure the line segment using ruler. Let us measure the length of given line
segment XY. X Y

We follow these steps:
Step 1: Place the ruler straight along the line segment and make sure that point X is at
the zero (0) mark of the ruler.

Step 2: Now look at the other end (point Y) of the line segment. It coincides with 12 cm

on the ruler. X Y
Therefore, length of line 0 cm 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

segment XY = 12 cm. 0 inch 1 2 3 4 5 6

Drawing a Line Segment

Let us draw a line segment ‘AB’ of length 13 cm. We follow these steps:
Step 1: Place the ruler on the paper and mark a point A against the zero (0 mark) of

the ruler.

Step 2: Then mark another point B against the 13 cm mark of the ruler.