Which of the following statements is a true proportion?
a.
18/32 = 27/48

b.
18/42 = 9/24

c.
18/42= 21/48

d.
18/42 = 118/142

Which lines are parallel? justify your answer. lines p and q are parallel because same side interior angles are congruent. lines p and q are parallel because alternate exterior angles are congruent lines l and m are parallel because same side interior angles are supplementary lines l and m are parallel because alternate interior angles are supplementary.