No. A bed is a three dimensional object: it cannot be a single parallel line. However, a bed will susually contain several sets of lines that are parallel.
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Which pair. Of line is parallel fghj
The difference between a perpendicular line and a parallel line is that a perpendicular line crosses or joins, while a parallel line doesn't touch at all.
Parallel lines have the same slope. So if you have a line with slope = 2, for example, and another line is parallel to the first line, it will also have slope = 2.
since one parallel lines is perpendicular to another line, the other parallel line is perpendicular to the line as well. so the two would not be parallel, only the original two.
Two lines are not parallel if they have exactly one point in common; otherwise they are parallel. So this means a line is parallel to itself!