Eventuell hilft Dir `signal` aus der `shapes.symbol` `shapes.symbols` Bibliothek:
\documentclass[tikz,border=10pt]{standalone}
\usetikzlibrary{shapes.symbols}
\tikzset{
hexagon/.style={signal,signal to=east and west}
}
\begin{document}
\begin{tikzpicture}
\draw[help lines](-2,-2)grid(2,2);
\node[
hexagon,
minimum width=4cm,minimum height=2cm,
draw=orange!50!black,fill=orange,fill opacity=0.25,text opacity=1]{Hexagon};
\end{tikzpicture}
\end{document}
![alt text][1]
[1]: http://texwelt.de/wissen/upfiles/hexagon.png
