¿Cómo puedes hacer que mis dos flechas se parezcan más a las de la foto?
\documentclass[10pt, border=.3cm]{standalone}
\usepackage{tikz}
\begin{document}
\begin{tikzpicture}
\draw (0,0)--(4,1)--(4,7)--(0,6)--(-4,7)--(-4,1)--cycle;
\draw(0,0)--(0,6);
\node (a) at (.715, 6.5) {};
\node (b) at (-.715, 6.5) {};
\draw[->] (a) to [out=120,in=60] (b);
\draw (9,7)--(13,7)--(12,3.5)--(13,0)--(9,0)--(8,3.5)--cycle;
\draw(12,3.5)--(8,3.5);
\draw(13,7)--(9.175,7.1)--(9.125,7.);
\draw(13,0)--(9.14,-.12)--(9.1,0);
\node (d) at (12.75, 3.8) {};
\node (c) at (12.5, 3.2) {};
\draw[->] (c) to [out=90,in=90] (d);
\end{tikzpicture}
\end{document}
Respuesta1
Coloque los puntos (c) y (d) con la misma separación utilizada en (a) y (b). Utilice valores adecuados para las palabras clave iny outy controle la "redondez" de la curva con la loosenesspalabra clave:
\documentclass[10pt, border=.3cm]{standalone}
\usepackage{tikz}
\begin{document}
\begin{tikzpicture}
\draw (0,0)--(4,1)--(4,7)--(0,6)--(-4,7)--(-4,1)--cycle;
\draw(0,0)--(0,6);
\node (a) at (.715, 6.5) {};
\node (b) at (-.715, 6.5) {};
\draw[->] (a) to [out=90,in=90, looseness=2] (b);
\draw (9,7)--(13,7)--(12,3.5)--(13,0)--(9,0)--(8,3.5)--cycle;
\draw(12,3.5)--(8,3.5);
\draw(13,7)--(9.175,7.1)--(9.125,7.);
\draw(13,0)--(9.14,-.12)--(9.1,0);
\node (d) at (12.5, 3.5 + .715) {};
\node (c) at (12.5, 3.5 - .715) {};
\draw[->] (c) to [out=0,in=0,looseness=2] (d);
\end{tikzpicture}
\end{document}
Resultado:
