Circles Class 9 MCQs Questions with Answers

1. In the given figure, BC is the diameter of the circle and ∠BAO = 60º. Then ∠ADC is equal to

2. In the given figure, if AOB is a diameter of the circle and AC = BC, then ∠CAB is equal to:

3. In the given figure, if ∠OAB = 40º, then ∠ACB is equal to

4. The center of the circle lies in______ of the circle.

5. If there are two separate circles drawn apart from each other, then the maximum number of common points they have:

6. If AB = 12 cm, BC = 16 cm and AB is perpendicular to BC, then the radius of the circle passing through the points A, B and C is:

7. Equal _____ of the congruent circles subtend equal angles at the centers.

8. If chords AB and CD of congruent circles subtend equal angles at their centres, then:

9. ABCD is a cyclic quadrilateral such that AB is a diameter of the circle circumscribing it and ∠ADC = 140º, then ∠BAC is equal to: 

10. In the given figure, if ∠DAB = 60º, ∠ABD = 50º, then ∠ACB is equal to:

11. In the given figure, if OA = 5 cm, AB = 8 cm and OD is perpendicular to AB, then CD is equal to:

12. In the given figure, find angle OPR.

13. In the given figure, if ∠ABC = 20º, then ∠AOC is equal to:

14. In the given figure, ∠AOB = 90º and ∠ABC = 30º, then ∠CAO is equal to:

15. If AB and CD are two chords of a circle intersecting at point E, as per the given figure. Then:

16. If a line intersects two concentric circles with centre O at A, B, C and D, then:

17. In the below figure, the value of ∠ADC is

18. The angle subtended by the diameter of a semi-circle is:

19. AD is the diameter of a circle and AB is a chord. If AD = 34 cm, AB = 30 cm, the distance of AB from the centre of the circle is

20. The longest chord of the circle is: