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Q.

In the adjoining figure, name the pair of obtuse vertically opposite angles.


Question Image
 

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a

∠AOD and ∠BOC

b

∠AOE and ∠BOD

c

∠EOD and ∠EOB

d

None of these 

answer is A.

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Detailed Solution

Given figure,
Question Image
We have to find the pair of obtuse vertically opposite angles.
We know that obtuse angles are greater than 90° but less than 180°.
In the given figure, ∠AOD and ∠BOC are forming an obtuse angle.
Therefore, the required angles are ∠AOD and ∠BOC which are obtuse vertically opposite angles.
Hence, option 1 is correct.
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