\usepackage {pstcol}
\begin{pspicture}(0,0)(2.2,2)\showgrid
\rput(.1,.1){\psline(0,0)(1.3,1.3)}
\psset{linestyle=dashed}
\rput{-20}(1.2,.4){\psline(0,0)(1,0)}
\end{pspicture}