Lines and intersect at point

MATHEMATICS · Subjective · CBSE · Mathematics · Lines and Angles · Lines and Angles

Problem

Lines ABAB and CDCD intersect at point OO, forming four angles in order: ∠AOC\angle AOC, ∠COB\angle COB, ∠BOD\angle BOD, and ∠DOA\angle DOA. Are ∠AOC\angle AOC and ∠BOD\angle BOD equal? Give a brief reason for your answer.

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