code: def right_parallel_line(ax, scale, i, **kwargs):
      
  
      p1 = (0, scale - i, i)
      p2 = (scale - i, 0, i)
      line(ax, p1, p2, **kwargs)
docs: Draws the i-th line parallel to the right axis.
  
      Parameters
      ----------
      ax: Matplotlib AxesSubplot
          The subplot to draw on.
      scale: float
          Simplex scale size.
      i: float
          The index of the line to draw
      kwargs: Dictionary
          Any kwargs to pass through to Matplotlib.