Question

In Figure 8, AO = BO and angleA = angleB.
Prove that AAOC = ABOD.
Is angleACO = angleBDO? Give reasons.
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Answer 1

Given

AO=BO

∠A=∠B

To prove

∠AOC=∠BOD

AO=BO [ given ]

O = O [ common ]

∠A=∠B[ given ]

By ASA rule we can prove that

∠ACO=∠BDO

Hence proved..