A line that is going straight up is perpendicular to the floor. A line that is leaning over is not perpendicular to the floor.
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intersecting lines are going on top of each other like this: + perpendicular lines go like this: X parallel lines go like this: =
Perpendicular lines are in shape of (most of the time) a plus sign (+) and intersecting lines speak for themselves: the lines intersect with one another. They are alike becuase they both have a vertex (when two or more lines meet; the center where the two or more lines meet). They may be different becuase a perpendicular line always has four right angles (or more), when intersecting lines can have various types of angles. Or to put it, perpendicular lines are a more specific type of intersecting line. -By Izzy; 6th grade; Content is 3rd to 4th grade basic geometry
These lines are perpendicular: _|
Lines that aren't perpendicular
PERPENDICULAR