Parallel lines are a fixed distance apart and will never meet, no matter how long they are extended. Lines that are parallel have the same gradient. The graphs above, \(y = 2x + 1\) and \(y = 2x - 2\) ...

i) (Motivate) If a ray stands on a line, then the sum of the two adjacent angles so formed is 180 degrees and the converse. ii) (Prove) If two lines intersect, the vertically opposite angles are equal ...

Parallel lines are lines which are always the same distance apart and never meet. Arrowheads show lines are parallel. When a pair of parallel lines is cut with another line known as an intersecting ...