Page 199 - Maths Class 06

Step 1. Mark a point O on a sheet of pa per, where a cir cle is to be
drawn.

Step 2. Take a pair of compasses and measure 3 cm using a
ruler. A

C.M. 1 2 3 4 5 6 7 8
Step 3. With out dis turb ing the open ing of the com passes, keep
the nee dle at mark O and draw com plete arc hold ing the 6 5 4 3
com passes from its knob. Fig. 14.2
After completing one complete round, we get the desired circle.

Construction of a Line Segment

To draw a line segment of a given length

We can draw a line segment of a given length in two ways:
O
(a) By us ing a ruler 3 cm

(b) By us ing a pair of com passes

Con struc tion : Draw a line seg ment of length 5.5 cm.
Fig. 14.3
(a) By using a ruler

Step 1. Mark a point in your note book and la bel it as A.
l A

Step 2. Place the ruler in such a way that the zero (0) mark on the ruler co in cides with A.
A

C.M. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Inch.
3
2
4
5
6
1
Fig. 14.4 (a)
Step 3. Now, move the sharp end of the pencil along the edge of the ruler till it reaches the point 5.5 cm
of the ruler.
A

C.M. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Inch.
5
6
1
2
4
3
Fig. 14.4 (b)
Step 4. Label the sec ond end as B.
AB is the required line segment
A B
Fig. 14.5

199 Mathematics-6