%% 
%%  Ein Beispiel der DANTE-Edition
%%  
%%  7. Auflage
%% 
%%  Beispiel 32-02-47 auf Seite 724.
%% 
%%  Copyright (C) 2016 Herbert Voss
%% 
%%  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.
%% 
%% 
%% ==== 
% Show page(s) 1
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%% 
\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{169.16928pt}
\setlength\parindent{0pt}
%StartShownPreambleCommands
\usepackage{pst-intersect}
%StopShownPreambleCommands
\begin{document}
\begin{pspicture}[showgrid](4,5)
\pssavebezier[linecolor=red,linewidth=1.5pt]%
  {A}(0,0)(0,5)(5,5)(5,1)(1,1.5)
\pssavebezier[linecolor=blue,linewidth=1.5pt]%
  {B}(0,5)(0,0)(5,0)(5,5)(0,2)
\psintersect[name=C,showpoints]{A}{B}
\uput[150](C1){1}\uput[85](C2){2}
\uput[90](C3){3} \uput[-20](C4){4}
\end{pspicture}
\end{document}