LaTeX-examples/documents/GeoTopo/figures/geometry-8.tex

\begin{tikzpicture}
    \tkzSetUpPoint[shape=circle,size=10,color=black,fill=black]
    \tkzSetUpLine[line width=1]
    \tkzDefPoints{0/0/A, 4/0/B, 2/2/C, 6/2/A'}

    \tkzMarkAngle[arc=l,size=1.15cm,color=green,fill=green!20,opacity=.8](A',A,C)
    \tkzLabelAngle[pos=0.9](A',A,C){$\alpha_1$}
    \tkzMarkAngle[arc=lll,size=1.15cm,color=green,fill=green!20,opacity=.8](B,A,A')
    \tkzLabelAngle[pos=0.9](B,A,A'){$\alpha_2$}

    \tkzMarkAngle[arc=l,size=0.7cm,color=red,fill=red!20,opacity=.8](C,B,A)
    \tkzLabelAngle[pos=0.5](C,B,A){$\beta$}

    \tkzMarkAngle[arc=l,size=0.6cm,color=blue,fill=blue!20,opacity=.8](A,C,B)
    \tkzLabelAngle[pos=0.4](A,C,B){$\gamma$}

    \tkzDrawSegments(A,B A,C A,A' B,C C,A')
    \tkzInterLL(A,A')(B,C)\tkzGetPoint{M}
    \node at ($(M) + (0.1,0.25)$) {$M$};

    \tkzLabelPoint[below left](A){$A$}
    \tkzLabelPoint[below right](B){$B$}
    \tkzLabelPoint[above left](C){$C$}
    \tkzLabelPoint[above right](A'){$A'$}

    \tkzMarkAngle[arc=l,size=0.6cm,color=green,fill=green!20,opacity=.8](B,A,C)
    \path[draw] ++(25:.35) node[rotate=0] {$\alpha$};


    \tkzDrawSegments(A,B A,C)
    \tkzDrawPoints(A,B,C,A',M)
\end{tikzpicture}