NCERT Solutions For Class 6 Maths, Chapter 4, Basic Geometrical Ideas, Exercise 4.6 is all about study of circle which involves knowledge of centre, radii, diameter of circle, a chord, a sector and segment. Exercise 4.6 class 6 maths, chapter 4 has total four questions.
NCERT Solutions For Class 6 Maths, Chapter 4, Basic Geometrical Ideas, Exercise 4.6
Q.1. From the figure, identify :
(a) The centre of circle
(b) Three radii
(c) A diameter
(d) A chord
(e) Two points in the interior
(f) A point in the exterior
(g) A sector
(h) A segment
Ans: (a) The centre of circle is O.
(b) Three radii are OA, OB and OC.
(c) A diameter is AC.
(d) A chord is ED.
(e) Two points in the interior are O and P.
(f) A point in the exterior is Q.
(g) A sector is AOB.
(h) A segment is ED.
Q.2. (a) Is every diameter of a circle also a chord?
(b) Is every chord of a circle also a diameter?
Ans: (a) Yes, every diameter of a circle is also a chord.
(b) No, every chord of a circle is not a diameter.
Q.3. Draw any circle and mark
(a) Its centre
(b) A radius
(c) A diameter
(d) A sector
(e) A segment
(f) A point in its interior
(g) A point in its exterior
(h) An arc
Ans: (a) The centre of the circle is O.
(b) The radius is OC.
(c) A diameter is AC.
(d) A sector is AOB.
(e) A segment is XY.
(f) A point in its interior is O.
(g) A point in its exterior is P.
(h) An arc is $\overset\frown{XY}$.
Q.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.
Ans: (a) True, two diameters will always intersect each other at the centre of the circle.
(b) True, the centre of the circle will always be in its interior.