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Please help if you want, would really appreciate it

Please help if you want, would really appreciate it-example-1

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Answer: 140°

Explanation:

- all straight lines are 180°

- since ACD and DCB help to create the straight line they must equal 180° when combined

- so 180 - 40 = 140

- therefore, ACD is 40° and DCB is 140°

hope this helps :)

User Eladv
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