1) lines are lines that do not lie in the same plane and have no points in common. a. coincident b. parallel c. perpendicular d. skew e. transversal f. concurrent 2) lines that lie in the same plane but have no points in common are called lines. a. concurrent b. coincident c. transversal d. parallel e. skew f. perpendicular 3) a line is a line that intersects two coplanar lines at two different points. a. parallel b. coincident c. concurrent d. perpendicular e. transversal f. skew