答案1
您可以使用该beamerposter
包更改为 din A3 布局:
\documentclass{beamer}
\usepackage{tikz}
\usepackage[orientation=portrait,size=a3]{beamerposter}
\begin{document}
\begin{frame}
\begin{tikzpicture}[scale=10,transform shape]
\node[fill=blue,font=\color{white}] at (0,0) {Test};
\draw[blue,-latex,line width=1cm] (0,-0.5) -- (-1,-2);
\end{tikzpicture}
\end{frame}
\end{document}