Two parallel lines.
When two lines are parallel, then they do not intersect.
yes, two lines can be coplanar.
If they are set next to each other and never cross.Edit by Gamerkid26:_________________ Those two lines are parallel.// Those two lines are also parallel.So are those two.\\ And those two./\ These lines are NOT parallel.======================
For two dimensional lines: Get the formulas for the two lines into a format so that you can evaluate the slope. If the slopes are different, then they will intersect. If the slopes are the same, then you have two parallel lines, or possibly, the two equations describe the same line.
Two lines that do not intersect on the same plane are Parallel lines.
Two lines cross or intersect at a point.
The two lines have the same gradient.
Two lines intersect at a point
An ellipse has two lines of symmetry.
a cirsquare
Perpendicular and parallel lines are two examples.