Answer:
m∠GFT = 142°
Step-by-step explanation:
∠GFT and ∠DFT are supplementary.
m∠GFT + m∠DFT = 180
7f + 163 + 6f + 56 = 180
13f + 219 = 180
13f = -39
f = -3
m∠GFT = 7f + 163 = 7(-3) + 163 = -21 + 163 = 142
