%% 
%%  Ein Beispiel der DANTE-Edition
%% 
%% 
%%  Copyright (C) 2010 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
%% 
\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{142.324pt}
\setlength\parindent{0pt}
\StartShownPreambleCommands
\usepackage{pst-eucl}
\StopShownPreambleCommands
\begin{document}
\begin{pspicture}(-2.5,-2.5)(2.5,2.5)
  \pstGeonode{O}(2,0){A}  \pstCircleOA{O}{A}
  \pstCurvAbsNode{O}{A}{M_1}{\pstDistVal{5.5}}
  \pstArcOAB[linecolor=red,linewidth=1.5pt,
    arrows=->]{O}{A}{M_1}
  \pstCurvAbsNode[CurvAbsNeg=true]{O}{A}{M_2}{%
    \pstDistAB{A}{M_1}}
  \psset{linecolor=blue,linestyle=dashed,
    linewidth=1.5pt,arrows=->}
  \pstArcnOAB{O}{A}{M_2}  \pstLineAB{A}{M_1}
\end{pspicture}
\end{document}