Symmetry number of a complex system
Creation of this applet was inspired by https://www.geogebra.org/material/show/id/fgdnqeby posted by Oktay Haracci — 27. Mai 2019 - 08:17 . How can you prove what this applet illustrates?
From the point of view of Steiner's theorem, the result is obvious. Calculations within the applet.