1*02918637SMatthew G. Knepleysegment orientation -1 2*02918637SMatthew G. Knepley\documentclass[tikz]{standalone} 3*02918637SMatthew G. Knepley 4*02918637SMatthew G. Knepley\usepackage{pgflibraryshapes} 5*02918637SMatthew G. Knepley\usetikzlibrary{backgrounds} 6*02918637SMatthew G. Knepley\usetikzlibrary{arrows} 7*02918637SMatthew G. Knepley\begin{document} 8*02918637SMatthew G. Knepley\begin{tikzpicture}[scale = 0.5,font=\fontsize{8}{8}\selectfont] 9*02918637SMatthew G. Knepley\path (2.) node(1_0) [draw,shape=circle,color=gray] {1}; 10*02918637SMatthew G. Knepley\path (-2.) node(2_0) [draw,shape=circle,color=gray] {2}; 11*02918637SMatthew G. Knepley\draw[color=gray] (2_0) -- (1_0); 12*02918637SMatthew G. Knepley\path (0.) node(0_0) [] {}; 13*02918637SMatthew G. Knepley\end{tikzpicture} 14*02918637SMatthew G. Knepley\end{document} 15*02918637SMatthew G. Knepleysegment orientation 0 16*02918637SMatthew G. Knepley\documentclass[tikz]{standalone} 17*02918637SMatthew G. Knepley 18*02918637SMatthew G. Knepley\usepackage{pgflibraryshapes} 19*02918637SMatthew G. Knepley\usetikzlibrary{backgrounds} 20*02918637SMatthew G. Knepley\usetikzlibrary{arrows} 21*02918637SMatthew G. Knepley\begin{document} 22*02918637SMatthew G. Knepley\begin{tikzpicture}[scale = 0.5,font=\fontsize{8}{8}\selectfont] 23*02918637SMatthew G. Knepley\path (-2.) node(1_0) [draw,shape=circle,color=gray] {1}; 24*02918637SMatthew G. Knepley\path (2.) node(2_0) [draw,shape=circle,color=gray] {2}; 25*02918637SMatthew G. Knepley\draw[color=gray] (1_0) -- (2_0); 26*02918637SMatthew G. Knepley\path (0.) node(0_0) [] {}; 27*02918637SMatthew G. Knepley\end{tikzpicture} 28*02918637SMatthew G. Knepley\end{document} 29