\documentclass[a4paper]{article} \usepackage{pstricks} \usepackage{pst-coxcoor} \pagestyle{empty} \begin{document} \begin{pspicture}(-4,-4)(4,4) \psset{unit=1.5cm,linewidth=0.01mm} \CoxeterCoordinates[drawedges=false,choice=5]% \end{pspicture} \end{document}