//public Point3D? IntersectionWith(Plane plane, double tolerance = 4.94066e-324); //public Line3D ProjectOn(Plane plane); public bool IsParallelTo(Line3D other);
public bool IsParallelTo(Line3D other, double angleTolerance);
public bool Equals(Line3D other);
public Tuple <Point3D, Point3D> ClosestPointsBetween(Line3D other, bool mustBeOnSegments);
public Tuple <Point3D, Point3D> ClosestPointsBetween(Line3D other);
public Line3D Project(Line3D line3DToProject);
public Point3D?IntersectionWith(Line3D line, double tolerance = 1.4013e-045);