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Question -

In a cyclic quadrilateral ABCD if AB || CD and ∠B = 70°, find the remaining angles.



Answer -

It is given that, ABCD is a cyclic quadrilateral such that AB || CD and  
 
Sum of pair of opposite angles of cyclic quadrilateral is 180°.
                   (  given)
So,  
Also AB || CD and BC transversal
So,
 
Now
                   

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