% Diagram by nilrem for PGDP project: Plane Geometry by G.A. Wentworth
% ***  Uses  epic  package   ***
% 129cc311.tex
% Pt.311. Fig.c.   (15.4, 9.1 )
\PGset[0.8em]
\begin{picture}    (15.4, 9.1 )
\drawline          ( 0.1  , 1     )(14.7  , 1     ) %left(AH)E
\dashline[80]{0.4}     ( 3    , 1     )( 9.8  , 6.33  ) %AB
\dashline[80]{0.2}( 9.8  , 6.33  )(11.8  , 7.898 ) %BD
\dashline[80]{0.4}     ( 9.8  , 1     )( 9.8  , 6.33  ) %HB
\qbezier[10]  (13.288, 2.3   )(11.786, 1     )( 9.8  , 1     ) %arc from B - right  part
\qbezier[10]  ( 9.8  , 1     )( 7.814, 1     )( 6.312, 2.3   ) %arc from B - left   part
\put(  2.5 ,  0.1 ){$\scriptstyle A$}   %A
\put(  9.1 ,  6.5 ){$\scriptstyle B$}   %B
\put( 11.8 ,  8.3 ){$\scriptstyle D$}   %D
\put( 14.7 ,  0.6 ){$\scriptstyle E$}   %E
\put(  9.3 ,  0.1 ){$\scriptstyle H$}   %H
\put( 10   ,  3.1 ){$\scriptstyle a$}           %a
\put(  5.8 ,  3.8 ){$\scriptstyle b$}           %b
\end{picture}
\PGrestore