Use ans environment in directed angles handout

handouts/Directed-Angles/Directed-Angles.tex

@@ -669,7 +669,7 @@ \section{Addendum}
 Directed angles are really confusing! Can I just use normal angles?
 \end{ques*}
 
-\noindent\textbf{Answer.}
+\begin{answer*}
 You could probably get away with it,
 because it is common practice to not deduct for configuration issues
 (although it does happen from time to time).
@@ -689,5 +689,5 @@ \section{Addendum}
 But then I realized it's actually easier once you get used to it,
 because you don't need to keep track of $x$ vs $180\dg-x$ anymore.
 So I don't think I would go back to using normal angles even if I could.
-
+\end{answer*}
 \end{document}