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Mathematics 11 Online
OpenStudy (shealah):

"If two angles are complementary, then the sum of their measures is 45." Contrapositive: "If two angles are not complementary, then the sum of their measures is not 45." What pair of angles would make both statements false? And another pair that make both statements true?

OpenStudy (anonymous):

Statements and their contrapositive are always equivalent; whatever works for one will work for the other.

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