static public bool AreParallel(LineSegment seg, Line line) { return(Line.AreParallel(seg.UnderlyingLine, line)); }
static public bool AreParallel(LineSegment seg, Ray ray) { return(Line.AreParallel(seg.UnderlyingLine, ray.UnderlyingLine)); }
static public bool AreParallel(LineSegment seg1, LineSegment seg2) { return(Line.AreParallel(seg1.UnderlyingLine, seg2.UnderlyingLine)); }