code: def unit_triangle():
      
      if NO_IMAGES:
          return
  
      nodes = np.asfortranarray([[0.0, 1.0, 0.0], [0.0, 0.0, 1.0]])
      surface = bezier.Surface(nodes, degree=1)
      ax = surface.plot(256)
      ax.axis("scaled")
      _plot_helpers.add_plot_boundary(ax)
      save_image(ax.figure, "unit_triangle.png")
docs: Image for :class:`.surface.Surface` docstring.