\documentclass[hyperref={pdfpagelabels=false},usepdftitle=false]{beamer} \usepackage{../../templates/myStyle} \begin{document} \title{\titleText} \subtitle{} \author{\tutor} \date{2. Juli 2013} \subject{Diskrete Mathematik} \tikzstyle{vertex}=[draw,circle,fill,minimum size=10pt,inner sep=0pt] \tikzstyle{edge}=[red, very thick] \tikzstyle{markedCircle}=[blue,line width=1pt,rotate=90,decorate,decoration={snake, segment length=2mm, amplitude=0.4mm},->] \tikzstyle{markedCircle2}=[red,line width=1pt,rotate=90,decorate,decoration={snake, segment length=3mm, amplitude=0.4mm},->] \pgfdeclarelayer{background} \pgfsetlayers{background,main} \begin{frame}{Sind Eulerkreise eindeutig?} \begin{tikzpicture}[scale=1.9] \node[vertex,label=$a_1$] (a1) at (1,2) {}; \node[vertex,label=$b_1$] (b1) at (3,2) {}; \node[vertex,label=$c_1$] (c1) at (2,1) {}; \node[vertex,label=$b_2$] (b2) at (0,2) {}; \node[vertex,label=$c_2$] (c2) at (1,3) {}; \node[vertex,label=$c_3$] (c3) at (3,3) {}; \node[vertex,label=$a_3$] (a3) at (4,2) {}; \draw (a1) -- (b1) -- (c1) -- (a1) -- cycle; \draw (a1) -- (b2) -- (c2) -- (a1) -- cycle; \draw (b1) -- (c3) -- (a3) -- (b1) -- cycle; \node<2->[vertex, red] (a1) at (1,2) {}; \draw<2->[color=blue, markedCircle,->] (a1.center) -- (b2.center); \draw<3->[color=blue, markedCircle] (b2.center) -- (c2.center); \draw<4->[color=blue, markedCircle] (c2.center) -- (a1.center); \draw<5->[color=blue, markedCircle] (a1.center) -- (b1.center); \draw<6->[color=blue, markedCircle] (b1.center) -- (c3.center); \draw<7->[color=blue, markedCircle] (c3.center) -- (a3.center); \draw<8->[color=blue, markedCircle] (a3.center) -- (b1.center); \draw<9->[color=blue, markedCircle] (b1.center) -- (c1.center); \draw<10->[color=blue, markedCircle] (c1.center) -- (a1.center); \draw<11->[markedCircle2] (a1) -- (b2.center); \draw<12->[markedCircle2] (b2.center) -- (c2.center); \draw<13->[markedCircle2] (c2.center) -- (a1.center); \draw<14->[markedCircle2] (a1.center) -- (b1.center); \draw<15->[markedCircle2] (b1.center) -- (a3.center); \draw<16->[markedCircle2] (a3.center) -- (c3.center); \draw<17->[markedCircle2] (c3.center) -- (b1.center); \draw<18->[markedCircle2] (b1.center) -- (c1.center); \draw<19->[markedCircle2] (c1.center) -- (a1.center); \end{tikzpicture} \end{frame} \end{document}