Question

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

Answer 1

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

Answer 2

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.