\documentclass[a4paper]{article}
\usepackage{bxeepic}
\begin{document}
\begin{picture}(100,100)
  \Thicklines
  \put(50,50){\ellipse{80}{60}}
  \thicklines
  \dashline{4}(0,50)(100,50)
  \dashline{4}(50,0)(50,100)
\end{picture}
\end{document}
