<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">\pstTriangle(1,2){A}(4,2){B}(1,5){C}
\pstMarkAngle[MarkAngleRadius=.5, LabelSep=.3]
  {B}{A}{C}{\boldmath$\cdot$}
</pre></body></html>