would 103° be the correct measurement for question 10?

Answer:
should I answer all of just your question if so yes it is
Answer: I think the answer is 77°
Step-by-step explanation:
b/c if m<DGF=77° then m<GDF is equals to 103° blc they are supplementary angles.then M<DEF=77° b/c they are in straight line with m<GDE and their sum have to be 180°.