如何在乳胶中绘制图形G =（9,11）？

Question

我目前正在尝试绘制此图。如能得到任何帮助我将不胜感激。

Answer 1

这是通过 TikZ 实现的。foreach-loop 简化了代码。基本上，对于n{1,...,9} 中的每个元素，我们都运行命令\filldraw (vn) circle (1pt);。

\documentclass{article}
\usepackage{tikz
   \begin{tikzpicture}
      \coordinate (v1) at (0,2);
      \coordinate (v2) at (1,2);
      \coordinate (v3) at (2,2);
      \coordinate (v4) at (0,1);
      \coordinate (v5) at (1,1);
      \coordinate (v6) at (2,1);
      \coordinate (v7) at (0,0);
      \coordinate (v8) at (1,0);
      \coordinate (v9) at (2,0);
      
      \foreach\n in {1,2,3,4,5,6,7,8,9}{\filldraw (v\n) circle (1pt);}
      \draw[thick] (v7) -- (v1) -- (v3) -- (v9);
      \draw[thick] (v2) -- (v5);
      \draw[thick] (v6) -- (v8);
      \draw (v4) -- (v5) -- (v3);
      \draw (v8) -- (v9);
      
      \draw (v1) node[anchor=south east] {$v_1$};
      \draw (v2) node[anchor=south]      {$v_2$};
      \draw (v3) node[anchor=south west] {$v_3$};
      \draw (v4) node[anchor=east]       {$v_4$};
      \draw (v5) node[anchor=north west] {$v_5$};
      \draw (v6) node[anchor=west]       {$v_6$};
      \draw (v7) node[anchor=north east] {$v_7$};
      \draw (v8) node[anchor=north]      {$v_8$};
      \draw (v9) node[anchor=north west] {$v_9$};
      
      \draw (-1,1) node[anchor=east] {$G=$};
   \end{tikzpicture}
\end{document}