1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
|
\input{preamble-standalone.ltx}
\begin{document}
% Ex. No. 35 (Section 5.3 : Internal Similitude Center)
\begin{tikzpicture}[scale=.75,rotate=-30]
\tkzDefPoint(0,0){O}
\tkzDefPoint(4,-5){A}
\tkzDefIntSimilitudeCenter(O,3)(A,1)
\tkzGetPoint{I}
\tkzExtSimilitudeCenter(O,3)(A,1)
\tkzGetPoint{J}
\tkzDefTangent[from with R= I](O,3 cm)
\tkzGetPoints{D}{E}
\tkzDefTangent[from with R= I](A,1 cm)
\tkzGetPoints{D'}{E'}
\tkzDefTangent[from with R= J](O,3 cm)
\tkzGetPoints{F}{G}
\tkzDefTangent[from with R= J](A,1 cm)
\tkzGetPoints{F'}{G'}
\tkzDrawCircle[R,fill=red!50,opacity=.3](O,3 cm)
\tkzDrawCircle[R,fill=blue!50,opacity=.3](A,1 cm)
\tkzDrawSegments[add = .5 and .5,color=red](D,D' E,E')
\tkzDrawSegments[add= 0 and 0.25,color=blue](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}
|