\documentclass{ppex}
\nonstopmode
\usepackage [all,poly]{xy}
\pagestyle{empty}
\setlength\textwidth{183.0pt}
\begin{document}
\ResetPreambleCommands
\ReadyForTheFray
\usepackage [all,poly]{xy}
\[\begin{xy}/r9mm/:
  (0,0),{\xypolygon6{%
   ~:{(1,-.1):(0,.33)::}~<{-}}}
 ,(0,2),{\xypolygon6{%
   ~:{(1,-.2):(0,.5)::}~<{-}}}
 ,(2.5,0),{\xypolygon6{%
   ~:{(1,.2):(0,-.3)::}~<{-}}}
 ,(2.5,2),{\xypolygon6{%
   ~:{(1,.3):(0,-.6)::}~<{-}}}
 ,(5,0)="O", +(-.5,3)="T","O"
 ,{\xypolygon6{~:{(1,0.2):(0,.4)::}
   ~<>{;"T"**@{-}}}}
\end{xy}\]
\end{document}