%% 
%%  Ein Beispiel der DANTE-Edition
%%  
%%  7. Auflage
%% 
%%  Beispiel 28-02-8 auf Seite 610.
%% 
%%  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
%% 
%% 
\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{193.16928pt}
\setlength\parindent{0pt}
%StartShownPreambleCommands
\usepackage{pst-eucl}
%StopShownPreambleCommands
\begin{document}
\begin{pspicture}(-2.5,-2.5)(4,2.5)
  \psset{linewidth=2\pslinewidth}
  \pstGeonode[PosAngle={0,-135,90}]%
    (1,0){A}(-2,-1){B}(0,1){C}
  \pstCircleOA{A}{C}
  \pstCircleOA[linestyle=dashed,
    DistCoef=0.5,Radius=\pstDistAB{A}{B}]{A}{}
  \pstCircleOA[linecolor=cyan,
    Radius=\pstDistAB{B}{C}]{A}{}
  \pstCircleOA[linecolor=magenta,
    DistCoef=0.75,Radius=\pstDistAB{B}{C}]{A}{}
  \pstCircleAB{B}{C}
  \pstCircleAB[linestyle=dotted]{A}{C}
\end{pspicture}
\end{document}
