How would you figure out all the missing letters equal?

Using the format of the given vocabulary which is

I know that angle ___ is ___ degrees because___

So for this I’m gonna jsut say what each angle are and a brief explanation and you would put it in that formula given!

x=120

(well 4 sides and we know that the other 2 sides are 120 since 60*2=120 and then every 4 side equals 360 so 360-120=240. 240/2-120)

Y=60

(vertical angle)

Z= 120

(Vertical to X… Use previous X explanation)

W=90

(Perpendicular=90 degrees)

V=90

(perpendicular=90 degrees)

U=90

(Perpendicular=90 degrees)

the answer is c)8

step-by-step explanaction: