Avec l'extension `tikz` :
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{calc}
\begin{document}
\begin{tikzpicture}[remember picture, overlay]
\draw (current page.south east) -- (current page.north west);
\end{tikzpicture}
\begin{tikzpicture}[remember picture, overlay]
\draw[blue] ([yshift=-10cm]current page.north east) -- ([yshift=-10cm]current page.north west);
\end{tikzpicture}
\begin{tikzpicture}[remember picture, overlay]
\draw[red] ([xshift=-10cm]current page.north east) -- ([xshift=-10cm]current page.south east);
\end{tikzpicture}
\node at (5,-6.5) {Lipsum};
\end{tikzpicture}
\end{document}
![alt text][1]
[1]: https://texnique.fr/osqa/upfiles/Screen_Shot_2019-07-07_at_19.30.23.pnghttps://texnique.fr/osqa/upfiles/Screen_Shot_2019-07-07_at_22.34.22.png