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In the given figure, O is the center of the circle . if BD =DC and angel DBC=30degree, find the measures angle ABC and angle BOC.

Where is the figure or diagram according to your question?


According to the Qn  We Can Say That BC is passing through the center O 

         Therefore It Is  Straight line Angle BOC = 180
        ABCD is Cyclic Parallelogram BC Bisect Angle B 
                          ABC =  30 degree

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