1triangle orientation -2 2\documentclass[tikz]{standalone} 3 4\usepackage{pgflibraryshapes} 5\usetikzlibrary{backgrounds} 6\usetikzlibrary{arrows} 7\begin{document} 8\begin{tikzpicture}[scale = 1.,font=\fontsize{8}{8}\selectfont] 9\path (-2.,-2.) node(2_0) [draw,shape=circle,color=gray] {2}; 10\path (-2.,2.) node(3_0) [draw,shape=circle,color=gray] {3}; 11\path (2.,-2.) node(4_0) [draw,shape=circle,color=gray] {4}; 12\path (0.,0.) node(5_0) [draw,shape=circle,color=gray] {5}; 13\path 14(-1.,-1.) node(6_0) [draw,shape=circle,color=gray] {6} -- 15(-2.,0.) node(7_0) [draw,shape=circle,color=gray] {7} -- 16(0.,-2.) node(8_0) [draw,shape=circle,color=gray] {8} -- 17(-1.,1.) node(9_0) [draw,shape=circle,color=gray] {9} -- 18(1.,-1.) node(10_0) [draw,shape=circle,color=gray] {10} -- 19(0,0); 20\draw[color=gray] (2_0) -- (8_0) -- (4_0) -- (10_0) -- (5_0) -- (6_0) -- (2_0); 21\draw[color=gray] (5_0) -- (9_0) -- (3_0) -- (7_0) -- (2_0) -- (6_0) -- (5_0); 22\path (0.,-1.33333) node(0_0) [] {}; 23\path (-1.33333,0.) node(1_0) [] {}; 24\end{tikzpicture} 25\end{document} 26triangle orientation 0 27\documentclass[tikz]{standalone} 28 29\usepackage{pgflibraryshapes} 30\usetikzlibrary{backgrounds} 31\usetikzlibrary{arrows} 32\begin{document} 33\begin{tikzpicture}[scale = 1.,font=\fontsize{8}{8}\selectfont] 34\path (-2.,-2.) node(2_0) [draw,shape=circle,color=gray] {2}; 35\path (2.,-2.) node(3_0) [draw,shape=circle,color=gray] {3}; 36\path (-2.,2.) node(4_0) [draw,shape=circle,color=gray] {4}; 37\path (0.,0.) node(5_0) [draw,shape=circle,color=gray] {5}; 38\path 39(-1.,-1.) node(6_0) [draw,shape=circle,color=gray] {6} -- 40(0.,-2.) node(7_0) [draw,shape=circle,color=gray] {7} -- 41(-2.,0.) node(8_0) [draw,shape=circle,color=gray] {8} -- 42(1.,-1.) node(9_0) [draw,shape=circle,color=gray] {9} -- 43(-1.,1.) node(10_0) [draw,shape=circle,color=gray] {10} -- 44(0,0); 45\draw[color=gray] (2_0) -- (7_0) -- (3_0) -- (9_0) -- (5_0) -- (6_0) -- (2_0); 46\draw[color=gray] (5_0) -- (10_0) -- (4_0) -- (8_0) -- (2_0) -- (6_0) -- (5_0); 47\path (0.,-1.33333) node(0_0) [] {}; 48\path (-1.33333,0.) node(1_0) [] {}; 49\end{tikzpicture} 50\end{document} 51