%% 
%%  A DANTE-Edition example
%% 
%%  Example 29-02-9 on page 568.
%% 
%%  Copyright (C) 2011 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[]{article}
\pagestyle{empty}
\setlength\textwidth{105.70511pt}
\setlength\parindent{0pt}

\usepackage{pst-eucl}

\begin{document}
\begin{pspicture}(-2,-2)(2,2)
  \pstGeonode[PosAngle={0,180,0}]{O}(1.5;24){A}(1.8;-31){B}
  \psset{arrows=->, arrowscale=2}
  \pstArcOAB[linecolor=red, linewidth=1.5\pslinewidth]{O}{A}{B}
  \pstArcOAB[linecolor=blue, linewidth=1.5\pslinewidth]{O}{B}{A}
  \pstArcnOAB[linecolor=cyan]{O}{A}{B}
  \pstArcnOAB[linecolor=magenta]{O}{B}{A}
\end{pspicture}
\end{document}