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Mathematics 11 Online
OpenStudy (anonymous):

Which statement is true about ∠7 and ∠8? ∠7 and ∠8 are supplementary because they are a pair of corresponding angles. ∠7 and ∠8 are complementary because they are a pair of adjacent angles on a straight line. ∠7 and ∠8 are congruent because they are a pair of adjacent angles on a straight line. ∠7 and ∠8 are supplementary because they are a pair of adjacent angles that form a straight line.

OpenStudy (anonymous):

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