ops

\documentclass{standalone}
\usepackage{tikz,tkz-euclide}
\usetkzobj{all}
\usetikzlibrary{decorations.markings}
\begin{document}
\begin{tikzpicture}
\tkzDefPoint(0,0){O}  \tkzDefPoint(3,0){A1} \tkzDefPoint(4,0){A2}
\draw [ decoration={ markings,
mark=at position 1 with {\arrow[scale=0.5]{triangle 90}}
},
postaction={decorate},
line width=12pt,
](A2) -- (A1);

\tkzDrawCircle[R,thick](O,2cm)
\tkzDrawSector[R,draw=black,fill=blue](O,2cm)(-90,45)
\tkzDrawSector[R,draw=black,fill=yellow](O,2cm)(45,90)
\tkzDrawSector[R,draw=black,fill=red](O,2cm)(90,135)
\tkzDrawSector[R,draw=black,fill=green](O,2cm)(135,225)
\tkzDrawSector[R,draw=black,fill=purple!60!white](O,2cm)(225,270)
\end{tikzpicture}
\end{document}