Optimizing poly-line geometry after combining

    var geometry1 = new RectangleGeometry(new Rect(100, 100, 100, 100));
    var geometry2 = new PathGeometry(new[] { new PathFigure(new Point(0,0), new[] {
                                                                                    new LineSegment(new Point(300, 300), true),
                                                                                    new LineSegment(new Point(300, 0), true),
                                                                                }, false) });
    PathGeometry combined = Geometry.Combine(geometry1, geometry2, GeometryCombineMode.Intersect, null);
    var figures = combined.Figures.ToArray();
    combined.Figures.Clear();
    foreach (var fig in figures)
    {
        PolyLineSegment current = (PolyLineSegment)fig.Segments.First();
        PolyLineSegment segment = new PolyLineSegment(current.Points.Take(current.Points.Count - 1), current.IsStroked);
        PathFigure newFig = new PathFigure(fig.StartPoint, new[] { segment }, false);
        combined.Figures.Add(newFig);
    }
    path.Data = combined;