Just I need is solve for x.

Answer:
x=6
Step-by-step explanation:
Since the figure has 4 sides, the total of all of the angles add to 360 as:
180(n-2)=T
180(4-2)=T
180(2)=T
360=T
Now we can set up an equation and solve for x:
17x+8+74+110+66=360
17x+258=360
17x=102
x=6
So x=6