How do I put the arc symbol over three letters to indicate that the three letters together represent an angle? For example, the display from the following code gives five points - A, B, C, D, and E on a circle. I want to say something like "the ratio \arc{ABC} to \arc{AEC} is 2 to 3."
\documentclass{amsart}
\usepackage{tikz}
\usetikzlibrary{calc,angles,positioning,intersections}
\begin{document}
\noindent \hspace*{\fill}
\begin{tikzpicture}
\draw (0,0) circle (1);
\draw (234:1) -- (162:1) -- (90:1) -- (18:1) -- (-54:1) -- cycle;
\node[anchor=234+180] at (234:1) {$A$};
\node[anchor=162+180] at (162:1) {$B$};
\node[anchor=90+180] at (90:1) {$C$};
\node[anchor=18+180] at (18:1) {$D$};
\node[anchor=-54+180] at (-54:1) {$E$};
\end{tikzpicture}
\hspace{\fill}
\vskip0.2in
\noindent In the preceding figure, a regular pentagon is inscribed in a circle. What is the ratio of the length of arc $\mathit{{ABC}}$ to the length of arc ${\mathit{AEC}}$?
\end{document}
