%%
%% The LaTeX Companion, 3ed
%%
%% Example 8-5-1 on page I-634 in "Basic objects".
%%
%% Copyright (C) 2022 Frank Mittelbach
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%%
%% See https://www.latex-project.org/lppl.txt for details.
%%

\documentclass{tlc3exa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{87.0pt}

%StartShownPreambleCommands
\usepackage{tikz}
%StopShownPreambleCommands

\begin{document}
\tikz{\draw (0,0)--(1cm,0cm)--(1cm,1cm)--(0cm,1cm)--cycle;}
\tikz{\draw (0,0)--(1,0)--(1,1)--(0,1)--cycle;}
\tikz[x={(0.5cm,0.5cm)}]{\draw (0,0)--(1,0)--(1,1)--(0,1)--cycle;}
\end{document}