Graphics, Figures & Tables ⇒ 90 degree Symbol

[coachbennett1981]

Here is the code I am working with. Does anyone have simple solution to drawing the 90 degree symbol for the middle angle? Do I just need to use psline and try to eyeball it.

Nick

Code: Select all

\documentclass{minimal}
\usepackage{pstricks-add}
\psset{unit=1.2cm}
\SpecialCoor
\psline[linewidth=2pt](3;32)(0,0)(3;0)
\psline[linewidth=2pt](0,0)(3;122)
\psarc[arcsepB=3pt,linecolor=red,linewidth=2pt]{-}{2}{0}{32}
\uput[90](2.4,.35){$ 32^{\circ}$}
\psline[linewidth=2pt](0,0)(-3;0)
\psarcn[arcsepB=3pt,linecolor=red,linewidth=2pt]{-}{-1}{0}{-58}
\uput[90](-1.5,.3){$\angle 1=?$}

\end{document}

Any help is much appreciated

Nick