ICSE Class 10th Mathematics Chapter 17 - Circles Important Questions with Answers

You should focus on solving ICSE Class 10th Mathematics Chapter 17: Circles important questions, especially to help you score high marks. By solving ICSE Class 10th Mathematics 17 questions, you will be solving exam-oriented questions only.

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In the given figure, O is the centre of the circle. ?OAB and ?OCB are 30° and 40° respectively. Find ?AOC . Show your steps of working.

Question 2.

In the given figure, ?BAD = 65°, ?ABD = 70°, ?BDC = 45°

Prove that AC is a diameter of the circle.
Find ?ACB.

Question 3.

Given O is the centre of the circle and ?AOB = 70°. Calculate the value of:

?OCA,
?OAC.

Question 4.

In the following figure, O is the centre of the circle. Find the values of a, b and c.

Question 5.

In the following figure, O is the centre of the circle. Find the values of a, b and c.

Question 6.

In the following figure, O is the centre of the circle. Find the value of a, b, c and d.

Question 7.

In the following figure, O is the centre of the circle. Find the values of a, b, c and d.

Question 8.

In the following figure, O is the centre of the circle. Find the values of a, b, c and d

Question 9.

In the following figure, O is the centre of the circle. Find the values of a, b, c and d.

Question 10.

In the figure, AB is common chord of the two circles. If AC and AD are diameters; prove that D, B and C are in a straight line. O₁ and O₂ are the centers of two circles.