IEVref:102-04-08ID:
Language:enStatus: Obsolete
Term: parallel, adj
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Definition: qualifies in a point space:

  • a straight line with respect to a coplanar straight line when they have no common point or when they are merged;
  • a straight line with respect to a plane when the plane contains a line parallel to the given line;
  • a plane with respect to another plane when any line in one plane has a parallel line in the other plane

NOTE 1 Parallelism is an equivalence relation for two lines or for two planes.

NOTE 2 Usual wordings for lines are "a line A is parallel to line B", or "lines A and B are parallel", or " A and B are parallel lines". Similar wordings are used for the other cases.


Publication date:2007-08
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Internal notes:2017-06-02: Cleanup - Remove Attached Image 102-04-08en.gif
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