diff --git a/mobject/mobject.py b/mobject/mobject.py
index 9c5b814a..9f079963 100644
--- a/mobject/mobject.py
+++ b/mobject/mobject.py
@@ -703,7 +703,7 @@ class Mobject(Container):
     # Getters
 
     def get_points_defining_boundary(self):
-        return self.points
+        return self.get_all_points()
 
     def get_num_points(self):
         return len(self.points)
@@ -743,7 +743,8 @@ class Mobject(Container):
 
     def get_boundary_point(self, direction):
         all_points = self.get_points_defining_boundary()
-        return all_points[np.argmax(np.dot(all_points, direction))]
+        index = np.argmax(np.dot(all_points, np.array(direction).T))
+        return all_points[index]
 
     def get_z_index_reference_point(self):
         # TODO, better place to define default z_index_group?