Parallel lines can run side by side on forever but perpendicular lines make a 90 degree angle.
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As far as we know, two lines can be perpendicular, or they can be parallel, but they can't be both.
They are parallel to each other.
Perpendicular and parallel lines are two examples.
'two perpendicular number lines are called'Special:Search
No they are perpendicular if the intersect at a right angle. + is perpendicular, = is parallel