\begin{center}
\setlength{\unitlength}{0.5cm}
\begin{Picture}(-7.5,-7.5)(7.5,7.5)
\externalaxes
\cartesiangrid(-7,-7)(7,7)
\pictcolor{blue}
\regularPolygon{1}{5}
\Put(-4,0){\regularPolygon{2}{6}}
\Put(3,3){\regularPolygon{2}{4}}
\Put(-4,-4){\regularPolygon[45]{2}{4}}
\Put(4,-4){\regularPolygon[90]{2.5}{11}}
\Put(-4,4){\regularPolygon[90]{3}{3}}
\end{Picture}
\end{center}
