[求助] 用LATEX软件画弧怎么画？

Originally posted by guoguos_zhou at 2011-07-11 15:54:58:
\usepackage{tikz}
.
.
.
\begin{center}

\begin{tikzpicture}

\draw  (0,0) arc (0:135:1.5cm); %起始点：角度范围：半径


\end{tikzpicture}


\end{center}

Originally posted by saladin983 at 2011-07-05 16:08:39:
什么用的弧线？要什么样的效果？