\PGset[0.8em]
\begin{picture}(23,10)

% 284x216
% 10x8

\drawline(7,9)(1,1)(11,1)(7,9) % ABCA

\dashline[80]{0.2}(2.125,2.5)(10.25,2.5) % EH

% 1.5 shorter

\drawline(18.875,7.5)(14,1)(22.125,1)(18.875,7.5) % ABCA

\put(  6.6,  9.1 ){$\scriptstyle A$}
\put(  0.3,  0.8 ){$\scriptstyle B$}
\put( 11.1,  0.8 ){$\scriptstyle C$}
\put(  1.3,  2.3 ){$\scriptstyle E$}
\put( 10.4,  2.3 ){$\scriptstyle H$}

\put( 18.5,  7.6 ){$\scriptstyle A'$}
\put( 13.1,  0.8 ){$\scriptstyle B'$}
\put( 22.2,  0.8 ){$\scriptstyle C'$}

\end{picture}
\PGrestore