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No, they have to be straight. --------------------------- ------------------ Those are parallel lines because they are straight. In geometry, a non-straight line has no meaning. It is allowed that arcs, planes and such can be parallel. In common usage, a twisting and turning line can be described as parallel to another, such as the rails of a railroad track, even though they are not co-planar or straight. It may not be proper by geometric definition but it is descriptive and conveys the meaning adequately.
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What difference between parallel and non parallel line in drawings?
Non-parallel lines intersect at some point, parallel lines don't.
What are the different straight lines?
Parallel
Can 2 non intersecting lines be parallel in 2 D?
In 2D geometry, that is the definition of parallel lines. Two non-intersecting lines are indeed parallel.
Can two lines be both non intersecting and non parallel?
no, if two lines are not parallel then the will eventually have to intersect.Alternate perspective:Yes, if two lines are non-parallel, they need not intersect in three dimensional space.
What are straight lines in the same plane that do not intersect?
Parallel lines
