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Two angles add up to 180 if and only if they are supplementary

User Gladia
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Answer:

True

Explanation:

You want to know if it is true or false that "two angles add up to 180° if and only if they are supplementary."

Supplementary angles

Two supplementary angles have a sum of 180°. That is the definition of supplementary angles. The offered statement is True.

User Ed Graham
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