Answer:
119°
Explanation:
angles in a quadrilateral add up to 360°
(15x - 10) + (15x + 14) + (11x + 10) + (9x - 4)
= 50x + 10
so, 50x + 10 = 360
50x = 360 - 10 = 350
x = 350/50 = 7.
greatest angle is at corner F.
15x + 14 = 15(7) + 14 = 105 + 14 = 119.
that is 119°