Circles Class 9 MCQs Questions with Answers

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

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

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

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

5. The longest chord of the circle is:

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

7. In the given figure, find angle OPR.

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

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

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

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

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

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

14. 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:

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

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

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

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

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

20. 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