no; they can be vertical and horizontal as well.
Parallel lines
Parallel lines are ALWAYS coplanar.
That is the correct spelling of "parallel lines" (coplanar lines always a fixed distance apart).
no
Parallel lines in Euclidean space are always coplanar.
Parallel lines
Parallel lines are ALWAYS coplanar.
That is the correct spelling of "parallel lines" (coplanar lines always a fixed distance apart).
no
Parallel lines in Euclidean space are always coplanar.
They are parallel lines
They are parallel lines
Parallel lines cannot intersect in the Euclidean plane. Intersecting lines are not parallel.
No, not always. Skew lines are never coplanar, but parallel lines are.
Yes, two lines that lie in parallel to the same line are always parallel to each other. This is based on the Transitive Property of Parallel Lines, which states that if line A is parallel to line B, and line B is parallel to line C, then line A is parallel to line C. Thus, if two lines are both parallel to a third line, they must be parallel to each other.
They may also be parallel lines.
That sounds to us like a very likely "yes" .