%% The LaTeX Graphics Companion, 2ed (first printing May 2007)

%%
%% The LaTeX Graphics Companion, 2ed (first printing May 2007)
%%
%% Example 11-4-25 on page 779.
%%
%% Copyright (C) 2007 Michel Goossens, Frank Mittelbach, Denis Roegel, Sebastian Rahtz, Herbert Vo\ss
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3
%% of this license or (at your option) any later version.
%%
%% See http://www.latex-project.org/lppl.txt for details.
%%

% Show page(s) 1

\documentclass{ttctbeamer}
% graphic converted to gray in book

\StartShownPreambleCommands
\documentclass{beamer}
\usetheme{Berkeley}
\StopShownPreambleCommands

\begin{document}
\begin{frame}
\frametitle{Demonstration of block environments}
\framesubtitle{\texttt{block},
\texttt{alertblock}, \texttt{exampleblock}}
\begin{block}{Pythagorean Theorem}
$c^2=a^2 + b^2$
\end{block}
\begin{alertblock}{Wrong Pythagoras}
$c=a + b$
\end{alertblock}
\begin{exampleblock}{Square of negative numbers}
$-3>-4\rightarrow (-3)^2<(-4)^2$
\end{exampleblock}
\end{frame}
\end{document}