Do two lines that are not parallel always, sometimes, or never intersect? Explain.


never; When two lines are not parallel, they are in separate planes.
never; When two lines are not parallel, they are in separate planes.

never; You cannot draw two lines that are not parallel and do not intersect.
never; You cannot draw two lines that are not parallel and do not intersect.

sometimes; The two lines might be far enough apart in the plane to never intersect.
sometimes; The two lines might be far enough apart in the plane to never intersect.

sometimes; The two lines could be in parallel planes, but not parallel to each other.
sometimes; The two lines could be in parallel planes, but not parallel to each other.

always; Lines that are not parallel are lines that intersect.