\documentstyle{article}

\begin{document}

\begin{eqnarray*}
  A & = & (0, 0) \\
  B & = & (1, 0) \\
  C & = & (1, 1) \\
  D & = & (1, 0) \\
  E & = & (1/2, 0) \\
  F & = & (0, 1/2 - t) \\
  G & = & (1/2 - z, 1/2) \\
  H & = & (1/4 + x, 1/4) \\
  I & = & (3/4 - y - z/2 - 2 z y, 1/4 + y)
\end{eqnarray*}

\begin{eqnarray*}
  x & = & 0.11  \\
  y & = & 0.075 \\
  z & = & 0.22  \\
  t & = & 0.121
\end{eqnarray*}

\begin{figure}[hbtp]
\centerline{\psfig{figure=numeric.eps,height=5in}}
\caption{The largest angles are CGD and AHE---about $84.5^o$}
\end{figure}

\end{document}

