Page 1 - Home Assignment 5 Angle subtended by arc Ch.- 10 Circle
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SAI International School
Class-IX
Mathematics
Chapter-10: Circle Home assignment-5
Sub topic : Angle Subtended by an arc of circle.
1. A,B and C are three points on a circle with centre O such that ∠ BOC = 30°
and ∠ AOB = 60°. If D is a point on the circle other than the arc ABC, find ∠ADC.
2. A chord of a circle is equal to the radius of the circle. Find the angle subtended by
the chord at a point on the minor arc and also at a point on the major arc.
3. ∠PQR = 100°, where P, Q and R are points on a circle with centre O. Find ∠ OPR.
4., ∠ABC = 69°, ∠ACB = 31°, find ∠BDC.
5. In Fig. 10.39, A, B, C and D are four points on a circle. AC and BD intersect at a point
E such that ∠BEC = 130° and ∠ECD = 20°. Find ∠BAC
