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10 lines
515 B
TeX
10 lines
515 B
TeX
\begin{tikzpicture}
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\tikzstyle{point}=[circle,thick,draw=black,fill=black,inner sep=0pt,minimum width=4pt,minimum height=4pt]
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\draw [red, thick,domain=90:-90, samples=100] plot ({cos(\x)}, {sin(\x)});
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\draw [green,thick,domain=-90:-270,samples=100] plot ({cos(\x)}, {sin(\x)});
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\node (a)[point,label=90:$a$] at (0,-1cm) {};
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\node (b)[point,label=-90:$b$] at (0, 1cm) {};
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\node at (1,0) [anchor=180, red] {$\gamma_1$};
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\node at (-1,0) [anchor=0, green] {$\gamma_2$};
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\end{tikzpicture}
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