[OS X TeX] epic, dvi, and pdf

[Wayne Richter]

sorry if this has been discussed before.

here is a close to minimal example.
When I typeset the following:

\documentclass[12pt]{article}
\usepackage{amsmath}
\usepackage{amssymb,latexsym}
\usepackage{epic,eepic}
\begin{document}
\begin{picture}(100,100)
\put(0,10){\line(1,0){115}}
\put(0,10){\line(0,1){80}}
\put(0,90){\line(1,0){194}}
\put(114,10){\line(1,1){80}}
\end{picture}
\end{document}

using the TeX+DVI option it comes out fine (a nice trapezoid).
But when I tex it using the Pdftex option, the pdf file does not show
the last line (of slope 1).

Why? Or, more precisely, does this mean I should be using the TeX+DVI
option when I am doing this kind of graphics?

Thanks,

Wayne