Step-by-step explanation:
sum of interior angle sum of each angle
1) 720 120
2)360 90
3)540 108
(2)
a) a=360-90-90-122
a=58
b) b=360-100-95-35
b=130
c) c=720-140-110-110-125-139
c=105
d) 2d=540-80-90-90
2d=280
d= 140
3) 5(360/5)
=360
4) y=90+90-122
y=58
x=360-117-66-58
x=119
