LaTeX.org

There are quite detailed explanations in Andrew's answer. He's provided a small script file that calls fontforge and converts the font to SVG. Could you add some more detail about where exactly you're stuck? Probably best to post that as a comment to Andrew's question, because he's obviously the ...

You might want to take a look at the solutions proposed at http://tex.stackexchange.com/questions/21548. Andrew Stacey has come up with a nice approach for this problem. In the example, letters are used, but adjusting it to use triangles should be reasonably simple.

Yup, I would also go with TikZ. You'll probably be happier learning TikZ than the picture environment syntax, as it's a lot more powerful.

Stefan's example can even be simplified a bit:

\documentclass{article}
\usepackage{tikz}
\begin{document}
\begin{tikzpicture}
\newdimen\R
\R=0.8cm

\draw (0 ...