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.
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A trapezium is a quadrilateral with two parallel lines.
Two parallel lines, so one pair of parallel lines. Which are the two horizontal lines in F. Parallel lines just have the same slope, so they will never touch. So l l are parallel lines.
Parallel in maths means opposite. Two parallel lines can never touch. I you are not sure if two lines are parallel then imagine that these lines go on for ever, will they eventually cross?
Parallel lines have the same slope.
Parallel lines never intersect. This is a parallel line. _______________________________________________________ _______________________________________________________ True ;