\documentclass{ppex}
\nonstopmode
\usepackage [all,poly]{xy}
\pagestyle{empty}
\setlength\textwidth{183.0pt}
\begin{document}
\ResetPreambleCommands
\ReadyForTheFray
\usepackage [all,poly]{xy}
\[\renewcommand{\objectstyle}{\scriptscriptstyle}
\begin{xy}
\xypolygon5{~:{/r12mm/:}
  ~<>{\xypolygon3{~:{(0.45,0):}
      ~*{\xypolyname\xypolynode}
      ~={30}}}
  ~>{}
  ~<{.}
  =<3mm>[o]{\xypolynode}}
\end{xy}\]
\end{document}
