	% Use standalone to generate PDF images
	% Recommended in slower machines and big files!
\documentclass{standalone}

	% Standard LaTeX libs
	%\usepackage{amssymb}

	% Custom TikZ
\usepackage{tikz}
\usetikzlibrary{3d}

	% Enable if using Overleaf to speed up compialtion times
	%\usepgfplotslibrary{external}
	%\tikzexternalize

\begin{document}
\begin{tikzpicture}
	\begin{scope}[canvas is xz plane at y=0]
	\draw (0,0,0) circle (1cm);
	\end{scope}

	\draw[dashed] (3/5,-1,-4/5) -- (3/5,-.5,-4/5);
	\draw (3/5,-.5,-4/5) -- (3/5,.5,-4/5) node [left] {$T_xS^1$};
	\draw[dashed] (3/5,.5,-4/5) -- (3/5,1,-4/5);
	\draw[fill] (3/5,0,-4/5) circle (.5pt) node [above right] {$x$};
	
	\draw (-1,0,-1) node {$S^1$};
\end{tikzpicture}
\end{document}
