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Martin Thoma 2012-09-28 10:25:41 +02:00
parent 947d95cde5
commit 24d2ba7a60
2 changed files with 13 additions and 6 deletions
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17
tikz/rectangle-varignon/rectangle-varignon.tex
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@ -1,6 +1,14 @@
\documentclass[varwidth=true, border=2pt]{standalone}
\usepackage{tikz}
\usetikzlibrary{shapes, calc}
\makeatletter
\newcommand*\getX[1]{\expandafter\getX@i#1\@nil}
\newcommand*\getY[1]{\expandafter\getY@i#1\@nil}
\def\getX@i#1,#2\@nil{#1}
\def\getY@i#1,#2\@nil{#2}
\makeatother
\begin{document}
\begin{tikzpicture}
% Define display style
@ -8,8 +16,7 @@
\tikzstyle{diagonals}=[dashed, blue]
% Define coordinates
\newcommand\AX{0}
\newcommand\AY{1}
\newcommand\A{0,1}
\newcommand\BX{3}
\newcommand\BY{0}
@ -21,15 +28,15 @@
\newcommand\DY{2}
% Create shortcuts for coordinates and draw labels
\coordinate[label=left:$A$] (A) at (\AX, \AY);
\coordinate[label=left:$A$] (A) at (\getX{\A}, \getY{\A});
\coordinate[label=right:$B$] (B) at (\BX, \BY);
\coordinate[label=above:$C$] (C) at (\CX, \CY);
\coordinate[label=above:$D$] (D) at (\DX, \DY);
\coordinate[label=below:$E$] (E) at ({(\AX+\BX)/2}, {(\AY+\BY)/2});
\coordinate[label=below:$E$] (E) at ({(\getX{\A}+\BX)/2}, {(\getY{\A}+\BY)/2});
\coordinate[label=right:$F$] (F) at ({(\BX+\CX)/2}, {(\BY+\CY)/2});
\coordinate[label=above:$G$] (G) at ({(\CX+\DX)/2}, {(\CY+\DY)/2});
\coordinate[label=left:$H$] (H) at ({(\DX+\AX)/2}, {(\DY+\AY)/2});
\coordinate[label=left:$H$] (H) at ({(\DX+\getX{\A})/2}, {(\DY+\getY{\A})/2});
% Draw the rectangle
\draw[blue, thick] (A) -- (B) -- (C) -- (D) -- (A);