Q3 of 50 Page 6

Two straight lines AB and CD intersect each other at O. If ∠BOD = 63˚, find ∠BOC.

Linear pair makes an angle of 180˚


∠BOD + ∠BOC = 180˚


63˚ + ∠BOC = 180˚


∠BOC = 180˚ - 63˚


∠BOC = 117˚


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