我画了这个多面体,现在我想在里面用希腊字母标记它,我该怎么做?
\begin{center}
\begin{tikzpicture}[thick,scale=5]
\coordinate (A1) at (5.0,0.2);
\coordinate (A2) at (4.8,0);
\coordinate (A3) at (4.8,-0.3);
\coordinate (A4) at (5.1,-0.5);
\coordinate (A5) at (5.4, -0.15);
\coordinate (B1) at (4.6,0);
\coordinate (B2) at (5.4, 0);
\draw(A1) -- (A2) -- (A3) -- (A4) -- (A5) -- cycle ;
\draw(B1) -- (B2);
\end{tikzpicture}
\end{center}
答案1
\documentclass{article}
\usepackage{tikz}
\begin{document}
\begin{center}
\begin{tikzpicture}[thick,scale=5]
\coordinate (A1) at (5.0,0.2);
\coordinate (A2) at (4.8,0);
\coordinate (A3) at (4.8,-0.3);
\coordinate (A4) at (5.1,-0.5);
\coordinate (A5) at (5.4, -0.15);
\coordinate (B1) at (4.6,0);
\coordinate (B2) at (5.4, 0);
\draw (A1) -- (A2) -- (A3) -- (A4) -- (A5) -- cycle ;
\draw (B1) -- (B2);
\path (A1.south) |- (A5.west) node [midway,above] {$\pi$};
% or a cleaner version, as @TorbjørnT. said in the comments:
% \node at (A1.south |- A5.west) {$\pi$};
\end{tikzpicture}
\end{center}
\end{document}