- n -

• near_equal() : vsol_box_2d , vsol_box_3d
• normal() : vsol_polygon_3d
• normal_at_point() : vsol_polygon_3d , vsol_triangle_3d , vsol_rectangle_3d , vsol_surface_3d
• not_applicable() : vsol_spatial_object_2d , vsol_spatial_object_3d
• num_vertices() : vsol_polyhedron