Another congruence shortcut in our bag of tricks!
We traced two angles and their included side and found that the triangles we created were always congruent.
So, if triangles share ASA in common then they are congruent!
Check out this interactive link for a detailed explanation and a diagram you can drag around to verify that the triangles will always be the same:
http://www.mathopenref.com/congruentasa.html