do all the question a,b,c completely.
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A and B can be possible because C is not a angle
A and
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Here is ur answer
1. to prove DOA = COB
DO = CO (GIVEN)
angle DOA = COB ( vertical opp. angle)
OA = OB ( given )
so DOA =COB
2. By CPCT,
DA = BC
3. Add triangle AOB in DOA and in COB
DOA + AOB = COB + AOB
Triangle ADB = BCA
BY CPCT, angle D = angle C
SO THIS IS THE ANSWER
1. to prove DOA = COB
DO = CO (GIVEN)
angle DOA = COB ( vertical opp. angle)
OA = OB ( given )
so DOA =COB
2. By CPCT,
DA = BC
3. Add triangle AOB in DOA and in COB
DOA + AOB = COB + AOB
Triangle ADB = BCA
BY CPCT, angle D = angle C
SO THIS IS THE ANSWER
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