If two lines are transversal to three lines, then the number of points of intersection are ___ .
If two lines are transversal to three lines then there are 6 points of intersection.
If two lines are transversal to three lines, then the number of points of intersection are ___.
If two lines are transversal to three parallel lines, then the number of points of intersection can be ___ .
If three lines are cut by two transversals, then there are ___ points of intersection .