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08.01.2020 •
Mathematics
In the figure, a||b, and both lines are intersected by transversal t. complete the statements to prove that ∠2 and ∠8 are supplementary angles. (given) m∠2 = m∠7 () m∠7 + m∠8 = 180� () m∠2 + m∠8 = 180° (substitution property) ∠2 and ∠8 are supplementary (definition of supplementary angles)
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