\documentclass[border=10pt,tikz]{standalone} \usepackage{dsfont} \usetikzlibrary{angles, decorations.pathmorphing} \begin{document} \tikzset{smallcircle/.style = {circle, draw, fill=white, inner sep=2pt}} \def\r{1.2} \newcommand*{\U}[5]{% \path (#2,#3) coordinate (0) +(#4:\r) coordinate (1) +(#5:\r) coordinate (2) pic[thick,…