[i]Parallel[/i][b] straight lines are straight lines which, being in the same plane and being produced indefinitely in both directions, do not meet one another in either direction.[br][br][/b]All these definitions and we finally have parallel! Easy enough, parallel lines are lines in a plane that never meet. We learned previously that parallel lines have the same slope also. [br][br]We don't have a tool yet for parallel, we will but we have to earn it first!