\input{Dias.tikz}

\begin{tikzpicture}
   \pgfmathparse{4.5} \let\x\pgfmathresult
   \pgfmathparse{\x-1.725} \let\xx\pgfmathresult
   
   \node[mybox,text width=3cm] 
   at (-\x,3*\h) 
   {Geometria Neutro};
   
   \node[mybox,text width=3cm] 
   at (\xx,3*\h) 
   {Existe Retângulo};
   
   \node[mybox] 
   at (-2,2*\h) 
   {
       Decomposição de um Triângulo em dois Triângulos 180\textdegree
   };
   \node[mybox] 
   at (0,1*\h) 
   {
      Qualquer Triângulo Retângulo tem Soma dos Ângulos 180\textdegree
   }; 
   \node[mybox] 
   at (0,0*\h) 
   {
      \textbf{Qualquer Triângulo tem Soma dos Ângulos 180\textdegree}
   };

   \pgfmathparse{-\x} \let\t\pgfmathresult
   \draw (\t,3*\h-\dy)-- (\t,2*\h+\dy);
   
   
   \pgfmathparse{\xx} \let\t\pgfmathresult
   \draw (\t,3*\h-\dy)-- (\t,1*\h+\dy);
   
   \pgfmathparse{-2} \let\t\pgfmathresult
   \draw (\t,2*\h-\dy)-- (\t,1*\h+\dy);
   
   \pgfmathparse{0} \let\t\pgfmathresult
   \draw (\t,1*\h-\dy)-- (\t,0*\h+\dy);
\end{tikzpicture}