code: def _get_bottom_line_coordinates(self):
          
  
          rect_x, rect_y, rect_width, rect_height = self.rect
  
          start_point = rect_x, rect_y + rect_height
          end_point = rect_x + rect_width, rect_y + rect_height
  
          return start_point, end_point
docs: Returns start and stop coordinates of bottom line