Haryana State Board HBSE 6th Class Maths Solutions Chapter 4 Basic Geometrical Ideas Ex 4.6 Textbook Exercise Questions and Answers.
Haryana Board 6th Class Maths Solutions Chapter 4 Basic Geometrical Ideas Exercise 4.6
Question 1.
From Fig., identify
(a) the centre of the 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.
Solution:
(a) Point O is the centre of the circle.
(b) Line segments \(\overline{\mathrm{OA}}, \overline{\mathrm{OB}}\) and \(\overline{\mathrm{OP}}\) are three radii of the circle.
(c) Line segment \(\overline{\mathrm{AC}}\) is a diameter of the circle.
(d) Line segment \(\overline{\mathrm{ED}}\) is a chord of the circle.
(e) Points 0 and P are in the interior of the circle.
(f) Point Q is in the exterior of the circle.
(g) The shaded portion OAB is a sector of the circle.
(h) The shaded part of chord ED is a segment.
Question 2.
(a) Is every diameter of a circle also a chord ?
(b) Is every chord of a circle also a diameter ?
Solution:
(a) Yes, every diameter of a circle is also a chord of the circle.
(b) No, every chord of a circle is not a diameter of the circle.
Question 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.
Solution:
(a) Point C is the centre of the circle.
(b) Line segment \(\overline{\mathrm{CP}}\) is its radius.
(c) Line segment \(\overline{\mathrm{QCP}}\) is its diameter.
(d.) The shaded region ACP is a sector.
(e) The dark-shaded region ABQ is a segment.
(f) Point D is in the interior of the circle.
(g) Point E is in the exterior of the circle.
(h) \(\overparen{Q B A}\) is an arc of the circle.
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.
Solution:
(a) True, (b) True.