Because angle EDG+ angle 3= angle 1

Because angle 2+ angle 1= 180.

So angle 2+ angle EDG+ angle 3= 180.

Because angle 3= angle b

So angle EDG+ angle 2+ angle B= 180.

Because angle EDG+ angle 2= angle EDB

So angle EDB+ angle B= 180.

So Germany and BC are parallel.

So angle C= angle AED

I hope typing won't cause you too much trouble because I can't type angles, parallelism and symbols.