Question

Im not sure if this is the right answer

Answer 1

6

(second option)

Explanation:

Supplementary angles add up to 180°

Therefore the sum of the two adjacent angles must be 180°

m∠GFE+ m∠FGD = 180°

5 + 20x + 55 = 180

20x + 60 = 180

20x = 180 - 60 = 120

x = 120/20 = 6