Two Non-Parallel Lines Intersect Exactly Once

Explanations 3

• Two non-parallel lines intersect. The distance between them starts out very long, then reduces until it is 0 at the intersection point. Once again, it increases forever, but gra…

  By Hyunwoo (David) Lee

• An interesting way to look at this idea is to place the two lines in an arbitrarily-oriented Cartesian coordinate plane. Then we can express the lines with the equations y=m1x+b…

  By Jesse Zhang

• So, the definition of parallel is lines that are coplanar and will never intersect. So, if two lines are in the same plane and are not parallel, its the opposite of the definiti…

  By Bella Cullen