F1itcgetankeken F1itcgetankeken

24-11-2016
Mathematics

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Select the counterexample to this conjecture:
A pair of supplementary angles includes one obtuse angle.
A.90º + 90º = 180º B.120º + 60º = 180º C.100º + 80º = 180º D.110º + 70º = 180º

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Nirina7 Nirina7

25-11-2016

the answer is .90º + 90º = 180º, .90º is not an obtuse angle

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