\documentclass{article}
 
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{tikz}
\usepackage{scalefnt}
 
\begin{document}
\pagestyle{empty}
 
\def\rotarc#1#2#3#4#5{
  \draw[#2,fill=#2] (#1,0) circle (0.03);
  \draw[#2,fill=#2] ({#1*cos(#3)},{#1*sin(#3)}) circle (0.03);
  \draw[thick,->,#2] (#1,0.075) arc (asin(0.075/#1):#3/2:#1) node [anchor=#5] {#4} arc (#3/2:#3-asin(0.075/#1):#1) ;
}

\begin {tikzpicture} [scale=2]
  \draw[dashed,->]      (-3.1,0) -- (3.1,0) node [anchor=north] {Re} ;
  \draw[dashed,->]      (0,-3.1) -- (0,3.1) node [anchor=west ] {Im} ;

  \rotarc {0.5} {red   } { 90} {$i^1 =  i$} {south west}
  \rotarc {1.2} {olive } {180} {$i^2 = -1$} {south west}
  \rotarc {1.9} {teal  } {270} {$i^3 = -i$} {south east}
  \rotarc {2.6} {blue  } {360} {$i^4 =  1$} {south east}
\end {tikzpicture}
 
\end{document}