Finally, I restored my old applet (from 2015).[br][u]a Construction the coordinates for Convex Polyhedra[/u][br] The peculiarity of this applet is that for a given number of [b]n[/b] particles on the sphere, their extreme distribution is found. The [color=#ff0000]maximum[/color] of the [b]sum of distances[/b] is found directly: maximization using the Maximize[]command and sliders as in [url=https://www.geogebra.org/material/show/id/dVXk2Gbq]https://www.geogebra.org/material/show/id/dVXk2Gbq[/url].[br][u]b Triangulation of polyhedral surfaces[/u][br] This section sorts and finds vertices, faces, and surface segments of a polyhedron and its dual image.[br][u]c Visualization of polyhedral surfaces[/u][br] In this section, the elements of the polyhedron and its dual image are directly translated into their [b]3d[/b] [b]form[/b].