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djtwinx017
The correct answer is A: 180 - 37.

< DOC and < AOB are vertical angles that are congruent. < AOB and < COB are supplements.

Since you already have the m < AOB = 37, and we’ve yet to determine the value of its supplement, then it means that we could establish the following equation:

180 - 37 = x

Where 37 = < AOB

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PeachiiBlossoms

Answer: 180 - 37 = x.

Explanation:

Slope AOB is equivalent to Slope DOC (37°).

Therefore, AOB = 37°.

AOC is a straight line, meaning its 180 degrees.

Therefore, AOC = 180°.

AOC (180°) - AOB (37°) = COB (143°).

180 - 37 = x.

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