Il est possible de modifier et de compiler cet exemple :
\documentclass[border=10pt]{standalone}
\usepackage{tkz-euclide}
\begin{document}
\tkzSetUpStyle[orange]{new}
\begin{tikzpicture}[rotate=30]
\tkzDefPoints{0/0/O,4/-5/A}
\tkzDefPoints{3/0/x,5/-5/y}
\pgfmathsetmacro\R{3}\pgfmathsetmacro\r{1}
\tkzDefIntSimilitudeCenter[R](O,\R)(A,\r) \tkzGetPoint{I}
\tkzDefExtSimilitudeCenter[R](O,\R)(A,\r) \tkzGetPoint{J}
\tkzDefTangent[from with R= I](O,3) \tkzGetPoints{D}{E}
\tkzDefTangent[from with R= I](A,1) \tkzGetPoints{D'}{E'}
\tkzDefTangent[from with R= J](O,3) \tkzGetPoints{F}{G}
\tkzDefTangent[from with R= J](A,1) \tkzGetPoints{F'}{G'}
\tkzDrawCircles(O,x A,y) \tkzDrawCircles[R](O,3 A,1)
\tkzDrawSegments[add = .5 and .5,new](D,D' E,E')
\tkzDrawSegments[add= 0 and 0.25,new](J,F J,G)
\tkzDrawPoints(O,A,I,J,D,E,F,G,D',E',F',G')
\tkzLabelPoints[font=\scriptsize](O,A,I,J,D,E,F,G,D',E',F',G')
\end{tikzpicture}
\end{document}