2
0
Fork 0
mirror of https://github.com/MartinThoma/LaTeX-examples.git synced 2025-04-26 06:48:04 +02:00
LaTeX-examples/tikz/triangle-9-point-circle/triangle-9-point-circle.tex
2016-06-18 10:31:57 +02:00

78 lines
2.6 KiB
TeX

\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(0,1){A}
\tkzDefPoint(4,0){B}
\tkzDefPoint(3,6){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)
% Get mid points
\tkzDefMidPoint(A,B) \tkzGetPoint{F}
\tkzDefMidPoint(A,C) \tkzGetPoint{E}
\tkzDefMidPoint(B,C) \tkzGetPoint{D}
\tkzLabelPoints[right,font=\sansmath\sffamily](D)
\tkzLabelPoints[left,font=\sansmath\sffamily](E)
\tkzLabelPoints[below,font=\sansmath\sffamily](F)
\tkzDefCircle[circum,/tikz/overlay](D,E,F)\tkzGetPoint{M}\tkzGetLength{rIN}
\tkzDrawCircle[R,color=red, very thick](M,\rIN pt)
% Get 'Hoehe'
\tkzInterLC[/tikz/overlay](B,C)(A,B)\tkzGetPoints{hah1}{hah2}
\tkzDefMidPoint(hah1,hah2) \tkzGetPoint{G}
\tkzLabelPoints[right,font=\sansmath\sffamily](G)
\tkzInterLC[/tikz/overlay](A,B)(C,A)\tkzGetPoints{hch1}{hch2}
\tkzDefMidPoint(hch1,hch2) \tkzGetPoint{I}
\tkzLabelPoints[below,font=\sansmath\sffamily](I)
\tkzInterLC[/tikz/overlay](A,C)(B,A)\tkzGetPoints{hbh1}{hbh2}
\tkzDefMidPoint(hbh1,hbh2) \tkzGetPoint{H}
\tkzLabelPoints[left,font=\sansmath\sffamily](H)
% 'Hoehenschnittpunkt'
\tkzInterLL(A,G)(C,I)\tkzGetPoint{S}
\tkzLabelPoints[above right,font=\sansmath\sffamily](S)
% More points
\tkzInterLC[/tikz/overlay,R](A,G)(M,\rIN pt)\tkzGetPoints{G}{J}
\tkzLabelPoints[above,font=\sansmath\sffamily](J)
\tkzInterLC[/tikz/overlay,R](B,H)(M,\rIN pt)\tkzGetPoints{L}{H}
\tkzLabelPoints[above,font=\sansmath\sffamily](L)
\tkzInterLC[/tikz/overlay,R](C,I)(M,\rIN pt)\tkzGetPoints{I}{K}
\tkzLabelPoints[above left,font=\sansmath\sffamily](K)
% Draw rest
\tkzDrawSegments[dashed](A,G C,I B,H)
\tkzDrawSegments[thick](A,J J,S) % red,very thick
\tkzDrawSegments[thick](C,K K,S) % green,very
\tkzDrawSegments[thick](B,L L,S) % blue,very
\tkzDrawPoints[size=2,fill=black](D,E,F,I,G,H,S,J,L,K)
\tkzDrawPoints[size=2,fill=red,color=red](M)
\tkzLabelPoints[right,font=\sansmath\sffamily,red](M)
% Draw polygon
\tkzDrawPolygon[thick](A,B,C)
\end{tikzpicture}
\end{preview}
\end{document}