Question 875314
Now you invoke CPCTC (Corresponding Parts of Congruent Triangles are Congruent),
so say that "angle EGD is congruent to angle EGF by CPCTC".
If in your class they do not use "CPCTC" as a way to abbreviate that theorem, maybe you would have to write it differently, but here in the US, we like to abbreviate everything.