\ANG{
\begin{minipage}[t]{8cm}
Berechne den Fl"acheninhalt der schraffierten Figur\\
Es gilt:\\
$a=8\,$cm, $b=5\,$cm, $c=2\,$cm\\
Das Viereck $ACDF$ ist ein Parallelogramm, $BE \parallel CD$ und $FE \parallel 
GH$.
\end{minipage}
\hfill
\begin{minipage}[t]{7cm}
\makebox[0cm]{}\\
\beginpicture

\setcoordinatesystem units <1mm,1mm> 
\unitlength1mm

\plot 0 0 41 0 56 16 16 16 0 0 /
\plot 25 0 41 16 /
\plot 25 0 25 10 35 10 /
\plot 25 10 16 16 /


\betweenarrows {a} [t] <0pt,-3mm> from 0 0 to 41 0
\betweenarrows {b} [b] <0pt,3mm> from 16 16 to 41 16

\put {A} at 0 -2
\put {C} at 41 -2
\put {E} at 41 18
\put {B} at 25 -2
\put {F} at 16 18
\put {D} at 56 18
\put {G} at 23 10
\put {H} at 37 10
\put {c} at 30 11


\setshadegrid span <2.5pt>
\vshade 0 0 0 16 0 16 25 0 10 /
\vshade 25 0 0 41 0 16 56 16 16 /

\setdashes <1mm>
\setlinear
\plot 41 0 41 16 /

\setsolid

\circulararc 90 degrees from 25 7 center at 25 10
\put {\circle*{0.8}} at 26.5 9

\circulararc 90 degrees from 41 13  center at 41 16
\put {\circle*{0.8}} at 42.5 15


\circulararc 45 degrees from  8 0 center at 0 0
\put {$45^o$} at 5 2

\endpicture 
\end{minipage}
}
\LSG{
$A=18,5\, \rm cm^2$
}

