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LaTeX-examples/tikz/triangle-gergonne-point/triangle-gergonne-point.tex
2016-06-18 10:09:56 +02:00

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\documentclass{article}
\usepackage[pdftex,active,tightpage]{preview}
\setlength\PreviewBorder{2mm}
\usepackage{tikz}
\usepackage{tkz-euclide}
\usetkzobj{all}
\usetikzlibrary{shapes, calc, decorations}
\usepackage{amsmath,amssymb}
\usepackage{helvet}
\usepackage[eulergreek]{sansmath}
\begin{document}
\begin{preview}
\begin{tikzpicture}[very thick,font=\sansmath\sffamily]
\tkzDefPoint(0,0){A}
\tkzDefPoint(6,0){B}
\tkzDefPoint(1,4){C}
\tkzLabelPoints[below left,font=\sansmath\sffamily](A)
\tkzLabelPoints[below right,font=\sansmath\sffamily](B)
\tkzLabelPoints[above,font=\sansmath\sffamily](C)
% Draw polygon
\tkzDrawPolygon[thick,fill=gray!10](A,B,C)
% Draw polygon
\tkzDrawPolygon[thick](A,B,C)
\tkzDefCircle[in,/tikz/overlay](A,B,C) \tkzGetPoint{M}\tkzGetLength{dOcircle}
\tkzDrawCircle[R,color=blue](M,\dOcircle pt)
\tkzInterLC[R,/tikz/overlay](B,C)(M,\dOcircle pt)\tkzGetPoints{X}{X2}
\tkzInterLC[R,/tikz/overlay](A,C)(M,\dOcircle pt)\tkzGetPoints{Y}{Y2}
\tkzInterLC[R,/tikz/overlay](A,B)(M,\dOcircle pt)\tkzGetPoints{Z}{Z2}
\tkzInterLL(A,X)(B,Y)\tkzGetPoint{G}
\tkzDrawSegments[dashed](A,X B,Y C,Z)
\tkzDrawPoints[size=2,fill=black](X,Y,Z)
\tkzDrawPoints[size=2,fill=red,color=red](G)
\tkzDrawPoints[size=2,fill=blue,color=blue](M)
\tkzLabelPoints[above right,font=\sansmath\sffamily](X)
\tkzLabelPoints[left,font=\sansmath\sffamily](Y)
\tkzLabelPoints[below,font=\sansmath\sffamily](Z)
\tkzLabelPoints[blue,above right,font=\sansmath\sffamily](M)
\tkzLabelPoints[red,above left,font=\sansmath\sffamily](G)
\end{tikzpicture}
\end{preview}
\end{document}