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weiteres Dreieck-Bild hinzugefügt

This commit is contained in:
Martin Thoma 2014-02-09 00:57:36 +01:00
parent d4e01e66b3
commit ab91a91ca1
9 changed files with 103 additions and 2 deletions

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@ -643,8 +643,15 @@ Der Flächeninhalt eines Dreiecks ist $\nicefrac{1}{2} \cdot \text{Grundseite} \
\begin{figure}[htp]
\centering
\input{figures/triangle-4.tex}
\caption{Flächenberechnung im Dreiecks}
\subfloat[$\nicefrac{1}{2} \cdot |\overline{AB}| \cdot |h_c|$]{
\resizebox{0.45\linewidth}{!}{\input{figures/triangle-5.tex}}
\label{fig:cube}
}%
\subfloat[$\nicefrac{1}{2} \cdot |\overline{BC}| \cdot |h_a|$]{
\resizebox{0.45\linewidth}{!}{\input{figures/triangle-4.tex}}
\label{fig:s2}
}%
\caption{Flächenberechnung im Dreieck}
\label{fig:flaechenberechnung-dreieck}
\end{figure}

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@ -0,0 +1,26 @@
\begin{tikzpicture}
\tkzSetUpPoint[shape=circle,size=10,color=black,fill=black]
\tkzSetUpLine[line width=1]
\tkzDefPoints{0/0/A, 4/0/B, -2/3/C}
\tkzDefLine[orthogonal=through C,/tikz/overlay](A,B) \tkzGetPoint{helper}
\tkzInterLL(A,B)(C,helper) \tkzGetPoint{Lc}
%\tkzMarkAngle[arc=l,size=0.4cm,color=red,fill=red!20](A,La,B)
%\tkzLabelAngle[pos=0.25](A,La,B){$\cdot$}
\tkzDrawPolygon(A,B,C)
\node at ($(A)+(-0.47,-0.2)$){$A$};
\node at ($(B)+(0.35,-0.2)$) {$B$}; % \tkzLabelPoint[below](B){$B$} is not accurate enough
\node at ($(C)+(0.05,0.3)$) {$C$};
\node[green] at ($(Lc)+(-0.4,-0.1)$) {$L_C$};
\tkzDrawSegments[red](C,Lc)
\tkzDrawSegments[blue](A,B)
\tkzDrawSegments[dashed](Lc,A)
\tkzLabelSegment[right,red](C,Lc){$h_c$}
\tkzLabelSegment[above,blue](A,B){$c$}
\tkzDrawPoints(A,B,C)
\tkzDrawPoints[color=green,fill=green](Lc)
\end{tikzpicture}