Exercise 4.5
1. Draw a circle and name its centre, a radius, a diameter and arc.
(2) Shade the regions in the circle
(i) Sector in red
(ii) Minor Segment in yellow
3. Say ‘True’ or ‘False’
We can locate only one centre in a circle.
Diameter is twice the radius.
An arc is a part of a circle.
All chords are equal in length.
All radii are not equal in length in a circle.
True
False
4. Take a circular sheet of paper. Fold it into two halves. Press the fold and open it. Do you find the crease of a diameter? Repeat the same activity by changing the fold. How many diameters do you observe? How many more diameters can be formed?
Answer :
When we take a circular sheet of paper and fold it into two halves, we get
When we repeat this process, we get
We find