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The figure given below, shows a circle w...

The figure given below, shows a circle with centre O.
Given ` : angle AOC = a and angle ABC = b `

Find the relationship between a and b.
(ii) Find the measure of angle OAB ,if OABC is a parallelogram

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The correct Answer is:
` a+ 2b = 360 ^(@) (ii) 60^(@) `
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ICSE-CIRCLES-EXERCISE 17(A)
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  14. In the given figure ,O is the centre of the circle and angle DAB = 5...

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  15. In the given figure. A is the centre of the circle , ABCD is a paralle...

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  16. ABCD is a cyclic quadrilateral in which AB is parallel to DC and AB is...

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  17. In the given figure AB is a diameter of the circle. Chord ED is paral...

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