def reversed(self):
        """returns a copy of the QuadraticBezier object with its orientation
        reversed."""
        new_quad = QuadraticBezier(self.end, self.control, self.start)
        if self._length_info['length']:
            new_quad._length_info = self._length_info
            new_quad._length_info['bpoints'] = (
                self.end, self.control, self.start)
        return new_quad
returns a copy of the QuadraticBezier object with its orientation
        reversed.