Use [color=#ff00ff][b]Point A[/b][/color] to change the [b]slope[/b] of the[b] parallel lines[/b].[br][br]Use [b][color=#00ff00]Point C[/color][/b] to change the [b]distance[/b] between the [b]parallel lines[/b].[br][br]Use [b][color=#ff0000]Point D[/color][/b] to change the slope of the [b][color=#38761d]transversal[/color][/b].