%% 
%%  The LaTeX Graphics Companion, 2ed (first printing May 2007)
%% 
%%  Example 2-3-14 on page 49.
%% 
%%  Copyright (C) 2007 Michel Goossens, Frank Mittelbach, Denis Roegel, Sebastian Rahtz, Herbert Vo\ss 
%% 
%%  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.
%% 

\documentclass{ttctexa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{183.83385pt}

\StartShownPreambleCommands
\usepackage{xcolor,pict2e,curve2e}
\StopShownPreambleCommands
\begin{document}
\setlength\unitlength{1cm}
\begin{picture}(5,5)(-2.5,-2.5)
  \DividE 360pt by 5pt to\Fifth
  \DirFromAngle\Fifth to\Dir
  \CopyVect 0,2.5 to\Vone
  \MultVect\Vone by\Dir to\Vtwo
  \MultVect\Vtwo by\Dir to\Vthree
  \MultVect\Vthree by\Dir to\Vfour
  \MultVect\Vfour by\Dir to\Vfive
  \polyline(\Vone)(\Vtwo)(\Vthree)%
           (\Vfour)(\Vfive)(\Vone)
  \color{blue}
  \polyline(\Vone)(\Vfour)(\Vtwo)%
           (\Vfive)(\Vthree)(\Vone)
  \color{green}\thinlines
             \put(0,0){\circle{5.}}
\end{picture}
\end{document}