Question

31. In the given figure BO and CO are bisectors of angle DBC and angle ECB respectively. If
angle BAC = 70° and angle ABC = 40°. Find the measure of angle BOC.
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Answer 1

Answer:

it seems to be a rhombus

therefore sum of opposite angles are supplementary

therefore angle A + angle O=180

70+angleO=180

angleO=180-70

angleO=110

Answer 2

Answer:

it seems to be a rhombus

therefore sum of opposite angles are supplementary

therefore angle A + angle O=180

70+angleO=180

angleO=180-70

angleO=110