![如何用“维恩图交叉菱形”画一个圆圈](https://linux22.com/image/480549/%E5%A6%82%E4%BD%95%E7%94%A8%E2%80%9C%E7%BB%B4%E6%81%A9%E5%9B%BE%E4%BA%A4%E5%8F%89%E8%8F%B1%E5%BD%A2%E2%80%9D%E7%94%BB%E4%B8%80%E4%B8%AA%E5%9C%86%E5%9C%88.png)
答案1
您可以添加圆弧并填充中间的区域来绘制菱形。
\documentclass{article}
\usepackage{tikz}
\begin{document}
\begin{tikzpicture}
\draw[very thick, fill=blue!40] (0,0) circle (2);
\draw[very thick, fill=purple!60] (120:2)
arc[start angle=60, end angle=-60, radius=2]
arc[start angle=240, end angle=120, radius=2];
\node at (180:1) {AB};
\node at (0:1) {B};
\end{tikzpicture}
\end{document}