Describe and explain the difference between perpendicular and parallel lines

Perpendicular lines are a pair of lines that, when they intersect (cross over each other) they create 90 degree angles (also known as right angles, or a "perfect corner").
Keep this in mind for the next one: In math on graphs, lines go on forever.
So anyways, parallel lines are 2 lines that run DIRECTLY next to each other, so they never intersect.

Answer d; a supplementary angle = 180°, so if that angle = 150°, y would = 30°.

21, i'm pretty sure it's right lol