If m∠BOA is 180° and m∠BOC is 110° , what is the measure of ∠COA ?(1 point)

Question

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Answer 1

If $\angle BOA$ is 180°, it means that ray OA is a straight line. Therefore, $\angle COA$ is the vertical angle of $\angle BOC$.

Vertical angles are equal, so the measure of $\angle COA$ is also 110°.