Page No 84:
Question 1:
From the figure, identify:
(a) The centre of circle (e) Two points in the interior
(b) Three radii (f) a point in the exterior
(c) a diameter (g) a sector
(d) a chord (h) a segment
Answer:
(a) O(b)

(c)

(d)

(e) O, P
(f) Q
(g) AOB (shaded region)
(h) DE (shaded region)
Question 2:
(a) Is every diameter of a circle also a chord?(b) Is every chord of circle also a diameter?
Answer:
(a) Yes. The diameter is the longest possible chord of the circle.(b) No
Question 3:
Draw any circle and mark(a) Its centre (e) a segment
(b) a radius (f) a point in its interior
(c) a diameter (g) a point in its exterior
(d) a sector (h) an arc
Answer:

(a) O
(b)

(c)

(d) COA
(e) DE
(f) O
(g) F
(h)

Question 4:
Say true or false:(a) Two diameters of a circle will necessarily intersect.
(b) The centre of a circle is always in its interior.
Answer:
(a) True. They will always intersect each other at the centre of the circle.(b) True
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