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I drew a circle and wanted to add text $T_1$ inside it:

\draw (0,0) circle [radius=0.3] {$T_1$};

Why does this not work, and how can I fix it?

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up vote 8 down vote accepted

Use a node to add the label

\draw (0,0) circle [radius=0.3] node {$T_1$};

or use a \node with circle shape:



\draw (-2,-2) grid (3,3);
\draw (0,0) circle [radius=0.3] node {$T_1$};
\node[draw,circle,minimum size=1cm,inner sep=0pt] at (2,0) {$T_1$};


enter image description here

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