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Step-by-step explanation:
ab=bc ( Given)
ad=ad. (as we can see)
bo=oc. (ad bisects ac in equal parts)
Triangle AOC=APB. (By s.s.s property)
Now we can say that each angle of triangles are equal
BO=AO=CO
Then these are radios of circle
now we can say that O is the centre of circle
hens proved
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