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Given that ∠A and ∠B are supplementary, Daisy conjectured that ∠A≅∠B .

Which statement is a counterexample to Daisy's conjecture?

A.) m∠A=45° and m∠B=45°

B.) m∠A=40° and m∠B=140°

C.) m∠A=90° and m∠B=90°

D.) m∠A=50° and m∠B=120°

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meerkat18
When two angles are supplementary, that means that the sum of their individual angles is equal to a straight line, which is 180°. If you add another restriction where the two supplementary angles are equal, then each vale of the angle constitutes half of 180°. Then, that means that ∠A = ∠B = 90°. The answer is C.
articunojaz

The answer to this is m<A=40° and m<B=140°

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