Never. If they are not on the same plane, then they cannot intersect because 2 lines and 1 point are always on a plane, in this case the original line, then a point in the middle to the point that creates the other line would be included, hence if they are non-coplaner then they cannot intersect.
27, 36, 45...all have factors of 9 and r greater then 20
If you subtract 20.5 by 5.25 x 2 you will get 10 by 2 and you have the answer
