\PGset[0.8em]
\begin{picture}(11,8)

% 238x185
% 9x7

\drawline(1,1)(10,1) % BD
\drawline(1,3.5)(10,3.5) % HK
\drawline(1,5.5)(10,5.5) % FG
\drawline(1,7)(10,7) % AC


\drawline(3,7)(2,1) % AB
\drawline(6,7)(8,1) % CD
\dashline[80]{0.2}(3,7)(5,1) % AN


\put(  2.7,  7.1 ){$\scriptstyle A$}
\put(  1.5,  0.2 ){$\scriptstyle B$}
\put(  5.7,  7.1 ){$\scriptstyle C$}
\put(  7.7,  0.2 ){$\scriptstyle D$}
\put(  2.0,  5.6 ){$\scriptstyle F$}
\put(  6.6,  5.6 ){$\scriptstyle G$}
\put(  1.5,  3.6 ){$\scriptstyle H$}
\put(  7.2,  3.6 ){$\scriptstyle K$}
\put(  3.6,  5.6 ){$\scriptstyle L$}
\put(  4.2,  3.6 ){$\scriptstyle M$}
\put(  4.7,  0.2 ){$\scriptstyle N$}

\end{picture}
\PGrestore