Q7 of 153 Page 148

Two straight lines AB and CD cut each other at O. If ∠BOD = 63°, then ∠BOD = ?



As we know that sum of adjacent angle on a straight line is 180o.


∠BOD + ∠BOC = 180°


∠BOC = 180° – 63°


∠BOC = 117°

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