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%%  Ein Beispiel der DANTE-Edition
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%%  7. Auflage
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%%  Beispiel 31-01-14 auf Seite 684.
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%%  Copyright (C) 2016 Herbert Voss
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%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
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%% ==== 
% Show page(s) 1
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\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{169.16928pt}
%StartShownPreambleCommands
\usepackage{pst-circ}
%StopShownPreambleCommands
\begin{document}
    \pstriangle[gangle=-90,linestyle=solid,fillstyle=solid,fillcolor=white,](-0.6,0)(0.4,0.6)
\end{document}