krychlicky.tex

\begin{center}
\begin{tikzpicture}[scale=1.6, every node/.style={scale=1.6}]
  % krychle
  \node[text=gray] at (1.9,1.8) {\LARGE{$3$}};
  % horizontální čáry
  \draw (0,0) -- (2,0);
  \draw (0,1) -- (2,1);
  \draw (0.4,1.3) -- (1,1.3);
  \draw (2.4,1.3) -- (3.4,1.3);
  \draw (1,2) -- (2,2);
  \draw (1.4, 2.3) -- (3.4,2.3);
  \draw (1.8, 2.6) -- (3.8,2.6);
  \draw[color=gray,dashed] (1.4,1.3) -- (2.4,1.3);

  % vertikální čáry
  \draw (0,0) -- (0,1);
  \draw (1,0) -- (1,2);
  \draw (2,0) -- (2,2);
  \draw (2.4,0.3) --(2.4,2.3);
  \draw (3.4,1.3) --(3.4,2.3);
  \draw (3.8,1.6) --(3.8,2.6);
  \draw[color=gray,dashed] (1.4,1.3) -- (1.4,2.3);

  % šikmé čáry
  \draw (0,1) -- (0.4,1.3);
  \draw (1,2) -- (1.8,2.6);
  \draw (2,0) -- (2.4,0.3);
  \draw (2,1) -- (2.4,1.3);
  \draw (2,2) -- (2.8,2.6);
  \draw (3.4,1.3) -- (3.8,1.6);
  \draw (3.4,2.3) -- (3.8,2.6);
  \draw[color=gray,dashed] (1,1) -- (1.4,1.3);

  % čísla
  \node at (0.5,0.5) {\LARGE{$0$}};
  \node at (1.5,0.5) {\LARGE{$1$}};
  \node at (1.5,1.5) {\LARGE{$2$}};
  \node at (2.9,1.8) {\LARGE{$4$}};

  % soustava
  \draw[->] (3,0) -- (3,1);
  \draw[->] (3,0) -- (4,0);
  \draw[->] (3,0) -- (3.4,0.3);

  % osy
  \node at (3.8,-0.2) {$x$};
  \node at (2.8,0.8) {$y$};
  \node at (3.2,0.4) {$z$};

\end{tikzpicture}
\end{center}