Uncommented include for traingle.png in T4

Tutorials/T04-A2Example/slides/T4.tex

@@ -193,7 +193,7 @@ McMaster University\\ }
         	     Consider the following triangle:
                \begin{figure}[h]
     \centering
-%    \includegraphics[width=0.5\textwidth]{triangle.png}
+    \includegraphics[width=0.5\textwidth]{triangle.png}
   \end{figure}
      We are using the following inequality which is called inequality equation to know the possibility of having triangle with three points A, B and C: