Answer:
42.3
Step-by-step explanation:
(x,y) --> (-x,-y)
Let me know if that's what your looking for.
Adjacent angles:
-ADB and BDC
-BDC and CDE
-CDE and EDF
-FDG and GDA
-GDA and ADB
Vertical angles:
-GDA and CDE
-FDE and ADB
-GDF and BDC
Hope this helps! :)