<EFD is also shown as e on the diagram. It is 90 degrees. <EFG is made up of the same two lines and is equal to 90 degrees (shown by the little box) so <EFD must be equivalent.
Answer:
n=-4
Step-by-step explanation:
-6n-(-2n)=16
-6n+2n=16
-4n=16
n=16/-4
