Perpendicular Lines
Different lines and angles are formed by various parts of a roller-coaster track.
Lines and angles on a roller-coaster track provide strong support for the machine. The relationships between such angles and the properties of perpendicular lines are the highlights of this lesson.
Recall that perpendicular lines are intersecting lines that form right angles. How many lines do you think you can draw through a point perpendicular to a given line?
