Basic Geometrical Ideas-Solutions Ex-4.6

CBSE Class –VI Mathematics
NCERT Solutions
Chapter 4 Basic Geometrical Ideas (Ex. 4.6)

Question 1. From the figure, identify:

(a) The centre of circle.

(b) Three radii.

(d) A chord.

(e) Two points in the interior.

(f) A point in the exterior.

(g) A sector.

(h) A segment.

Answer: (a) O is the centre.

(b) Three radii: OA, OB and OC

(d) A chord: ED

(e) Interior points: O, P

(f) Exterior point: Q

(g) A sector: OAB

(h) A segment: ABC

Question 2. (a) Is every diameter of a circle also a chord?

(b) Is every chord of a circle also a diameter?

Answer: (a) Yes, every diameter of a circle is also a chord.

(b) No, every chord of a circle is not a diameter.

Question 3. Draw any circle and mark:

(a) Its centre.

(b) A radius.

(d) A sector.

Answer:

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

(b) True