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Answer :

Answer:

its C

Step-by-step explanation:

because 180⁰-40⁰=140⁰

AnimalPostgo

Answer:

∠m = 140°

Step-by-step explanation:

∠1 and ∠m are adjacent angles, so they add up to 180°.

∠1 + ∠m = 180

40 + ∠m = 180

∠m = 180 - 40

∠m = 140°

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