Question

Given k║p.

Which of the following is NOT a valid proof that m∠1+m∠6=180°
(SECOND IMAGE ONWARDS are the solutions)

Answer 1

From the given information, given k║p the incorrect statement would be statement D. The reason being, m∠1 and m∠2 are not alternate exterior angles, they are linear pairs, the rest of the statement is correct. Thus the correct answer is:
D