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xxTIMURxx [149]
3 years ago
13

Which biconditional statement below is true?

Mathematics
1 answer:
Sindrei [870]3 years ago
8 0

Answer:  Angles are supplementary if and only if their sum is 180° is true.

Step-by-step explanation:

Test by making both parts negative: Angles are not supplementary if and only if their sum is not 180°  This is also true.

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