diff --git a/tdcgal/plane/objects.py b/tdcgal/plane/objects.py
index 6083f9f..6133dbd 100644
--- a/tdcgal/plane/objects.py
+++ b/tdcgal/plane/objects.py
@@ -4,7 +4,7 @@ from sympy import symbols, solve
 
 from loguru import logger
 
-from ..cgal_bindings.plane import Point_2, Segment_2, squared_distance
+from ..cgal_bindings.plane import Point_2, Segment_2, Line_2, squared_distance
 
 
 def point_maker(pre_point):
@@ -73,11 +73,9 @@ class Segment2D(Shape2D, Segment_2):
     def target(self):
         return self._target()
 
-    # 与线段共线的直线
-    def supporting_line(self) -> Line:
-        return self.supporting_line()
 
-"""class Line(Shape2D):
+# 直线类
+class Line(Shape2D, Line_2):
     def __init__(self, point1, point2, **kwargs):
         super(Line, self).__init__(**kwargs)
         self.point1 = point_maker(point1)
@@ -222,7 +220,7 @@ class Segment2D(Shape2D, Segment_2):
             raise ValueError("Invalid input for Line")
         """"""
 
-
+"""
 class Rectangle(Shape2D):
     def __init__(self, point1, point2, **kwargs):
         super(Rectangle, self).__init__(**kwargs)