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Answer:The third angle would be 60⁰

Step-by-step explanation: Since a triangle adds up to 180⁰, 40 + 80 = 120⁰. And 180 - 120 = 60⁰.

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Answer:

The angels we have are 40 and 80, so 40+80=120, then you know that a triangle's degrees needs to equal 180 degrees, so 180-120=60!!

60 is your answer!

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