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In the given figure, sides AB and AD of quad. ABCD are produced to E and F respectively. If `/_ CBE = 100^(@)` then `/_ CDF= ?`

A

`100^(@)`

B

`80^(@)`

C

`130^(@)`

D

`90^(@)`

Text Solution

Verified by Experts

The correct Answer is:
B
In cyclic quad. ABCD, int. opp. `/_ ADC =` ext. `/_ CBE = 100^(@)`
`:. /_ CDF = 180^(@) - /_ ADC = 180^(@) - 100^(@) = 80^(@)`
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RS AGGARWAL-CIRCLES -MULTIPLE CHOICE QUESTION(MCQ)
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  14. In the given figure, , O is the centre of a circle and / AOB = 140^(@)...

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  15. In the given figure , Ois the centre of a circle and / AOB = 130^(@). ...

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