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added equilateral triangle image

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Martin Thoma 2013-02-02 11:02:36 +01:00
parent 008f2a94fb
commit cd0225f7c4
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35
tikz/equilateral-triangle-circles/Makefile Normal file
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SOURCE = equilateral-triangle-circles
DELAY = 80
DENSITY = 300
WIDTH = 500
make:
pdflatex $(SOURCE).tex -output-format=pdf
make clean
clean:
rm -rf $(TARGET) *.class *.html *.log *.aux *.data *.gnuplot
gif:
pdfcrop $(SOURCE).pdf
convert -verbose -delay $(DELAY) -loop 0 -density $(DENSITY) $(SOURCE)-crop.pdf $(SOURCE).gif
make clean
png:
make
make svg
inkscape $(SOURCE).svg -w $(WIDTH) --export-png=$(SOURCE).png
transparentGif:
convert $(SOURCE).pdf -transparent white result.gif
make clean
svg:
make
#inkscape $(SOURCE).pdf --export-plain-svg=$(SOURCE).svg
pdf2svg $(SOURCE).pdf $(SOURCE).svg
# Necessary, as pdf2svg does not always create valid svgs:
inkscape $(SOURCE).svg --export-plain-svg=$(SOURCE).svg
rsvg-convert -a -w $(WIDTH) -f svg $(SOURCE).svg -o $(SOURCE)2.svg
inkscape $(SOURCE)2.svg --export-plain-svg=$(SOURCE).svg
rm $(SOURCE)2.svg

82
tikz/equilateral-triangle-circles/equilateral-triangle-circles.tex Normal file
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\documentclass[varwidth=true, border=2pt]{standalone}
\usepackage{tikz}
\usetikzlibrary{arrows,positioning, calc, shapes.misc}
\tikzset{
%Define standard arrow tip
>=stealth',
% Define arrow style
pil/.style={->,thick}
}
\tikzstyle{point}=[ thick,
draw=gray,
cross out,
inner sep=0pt,
minimum width=4pt,
minimum height=4pt]
\begin{document}
\begin{tikzpicture}
% draw the background
% -2/cos(30°) = 4/sqrt(3) \approx 2.309 - Umkreisradius
% 2*tan(30°) = 2/sqrt(3) \approx 1.155 - Inkreisradius
\node[point] (TriangleCenter) at (0,0) {};
\draw[thick, fill=blue!15, draw=blue] (TriangleCenter) circle(2.345cm);
\begin{scope}[shift={(30:-2.309)}]
\draw [line width=1.5pt, fill=gray!2] (0,0) -- (60:4) -- (4,0) -- cycle;
\draw[thick, fill=green!15, draw=green] (TriangleCenter) circle(1.12cm);
\coordinate[label=left:$A$] (A) at (0,0);
\coordinate[label=right:$B$] (B) at (4,0);
\coordinate[label=above:$C$] (C) at (2,3.464);
% Sign for right angle of h_c
%\begin{scope}[shift={(2,0)}]
% \draw[fill=gray!30] (0,0) -- node[above=-0.15cm,near start] {$\cdot$} (0:0.18cm)
% arc (0:90:.18cm);
%\end{scope}
% sign of right angle of h_a
%\begin{scope}[shift={(30:3.464cm)}]
% \draw[fill=gray!30] (0,0) -- node[near end,right=-0.28cm] {$\cdot$} (-60:0.18cm)
% arc (-60:-150:.18cm);
%\end{scope}
% sign of right angle of h_b
%\begin{scope}[shift={(60:2cm)}]
% \draw[fill=gray!30] (0,0) -- node[right=-0.08cm, near start] {$\cdot$} (60:0.18cm)
% arc (60:-30:.18cm);
%\end{scope}
% angle alpha
%\draw[fill=green!30] (0,0) -- (0:0.75cm) arc (0:60:.75cm);
%\draw (0.35cm,0.25cm) node {$\alpha$};
% angle beta
\begin{scope}[shift={(4cm,0cm)}]
%\draw[fill=green!30] (0,0) -- (-180:0.75cm) arc (180:120:0.75cm);
\draw[color=gray, dashed] (0,0) -- node[sloped, above=-0.1cm] {} (150:3.464cm); % $\scriptstyle h_b$
%\draw (150:0.5cm) node {$\beta$};
\end{scope}
% angle gamma
\begin{scope}[shift={(60:4)}]
%\draw[fill=green!30] (0,0) -- (-120:.75cm) arc (-120:-60:.75cm);
\draw[color=gray, dashed] (0,0) -- node[right=-0.1cm] {} (-90:3.464cm); % $\scriptstyle h_c$
%\draw (-90:0.5cm) node {$\gamma$};
\end{scope}
% Height with label
\draw[color=gray, dashed] (0,0) -- node[sloped, above=-0.1cm] {} (30:3.464cm); % $\scriptstyle h_a$
% The triangle
\draw [line width=1.5pt] (0,0) -- (60:4) -- (4,0) -- cycle;
\end{scope}
\coordinate[label=below:$c$](c) at ($ (A)!.5!(B) $);
\coordinate[label=left:$b$] (b) at ($ (A)!.5!(C) $);
\coordinate[label=right:$a$](a) at ($ (B)!.5!(C) $);
\end{tikzpicture}
\end{document}