GMAT: Lines and Angles Quiz

Lines and angles are important Geometric concepts on the GMAT. There are two special cases of lines that should be understood; parallel and perpendicular lines. Parallel lines are those which are the same distance apart at all point and will never intersect one another. Perpendicular lines are those that intersect at 90°.
Parallel lines create special angles as follows, where line l and line m are parallel: