Question

Which statement allows for us to conclude that line M and line N are parallel?

Answer 1

Statement C because:

Internal angles between parallel lines add up to 180 degrees

Answer 2

if ∡3 is a supplementary angle with ∡5, namely they both add up to 180°, then that means that the corresponding angles of ∡1 = ∡5, and ∡3 = ∡7, which means the lines crossing those angles are parallel.