ICSE Board Practice

ICSE Grade X - Angle Properties of a Circle
Question 1
1.
Two circles with radii R and r touch internally. If the distance between their centres is d, then
  • d > R - r
  • d < R - r
  • d < R + r
  • d = R - r
  • d = R + r
Question 2
2.
In the given figure, ∠OIH = 7° & ∠GFE = 68°, find ∠OHE
  • 54°
  • 49°
  • 79°
  • 59°
  • 64°
Question 3
3.
△HIJ is inscribed in a circle with centre O. If ∠HOI = 123° and ∠IOJ = 163°, find ∠IJH
  • 66.5°
  • 61.5°
  • 91.5°
  • 76.5°
  • 71.5°
Question 4
4.
In the given figure, two circles of radii CE = 14.5 cm & DE = 11.4 cm intersect at E & F. The distance between the centres CD = 20 cm, find the length of EF
  • 15.26 cm
  • 18.26 cm
  • 16.26 cm
  • 14.26 cm
  • 17.26 cm
Question 5
5.
Which of the following statements are true?
a)
Angle subtended by the major arc in its alternate segment is obtuse.
b)
The angle subtended in a semicircle is a right angle.
c)
Angle subtended by the major arc at the centre is acute.
d)
If two chords are equal, then they are equidistant from the centre of the circle.
e)
Angle subtended in the major segment is obtuse.
  • {c,e,d}
  • {e,b}
  • {a,b,d}
  • {c,a,b}
  • {c,a}
Question 6
6.
In the given figure, O is the centre of the circle and DF is a diameter. If ∠ECD = 65°, find ∠EDF
  • 35°
  • 30°
  • 55°
  • 40°
  • 25°
Question 7
7.
O is the centre of the circle. If ∠IJK = 124°, find ∠KOL
  • 78°
  • 68°
  • 83°
  • 73°
  • 98°
Question 8
8.
△KLM is inscribed in a circle with centre O. If ∠KOL = 101° and ∠LOM = 140°, find ∠KLM
  • 74.5°
  • 89.5°
  • 59.5°
  • 64.5°
  • 69.5°
Question 9
9.
The opposite angles in a cyclic quadrilateral are
  • complementary
  • equal
  • linear pair
  • supplementary
Question 10
10.
Angle subtended by the major arc at the centre is
  • right angle
  • obtuse angle
  • reflex angle
  • acute angle
  • complete angle