diff --git a/manim/mobject/geometry/arc.py b/manim/mobject/geometry/arc.py
index 8b9e832a5b..2c41a4a8e9 100644
--- a/manim/mobject/geometry/arc.py
+++ b/manim/mobject/geometry/arc.py
@@ -640,8 +640,7 @@ def construct(self):
                     self.add(circle, s1, s2)
 
         """
-        start_angle = angle_of_vector(self.points[0] - self.get_center())
-        proportion = (angle - start_angle) / TAU
+        proportion = angle / TAU
         proportion -= np.floor(proportion)
         return self.point_from_proportion(proportion)