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

Which statement is a counterexample to Daisy's conjecture?


1. m∠A=90° and m∠B=90°

2. m∠A=40° and m∠B=140°

3. m∠A=45° and m∠B=45°

4. m∠A=50° and m∠B=120°