Answer:
the value of x is 70
Step-by-step explanation:
first in (part140)
let, the other angle be a
140°+a=180°(straight line)
a=40°
now,
in(part150)
let, the other angle be b
150°+b=180°(straight line)
b=30°
then,
a+b=x(sum of 2 opposite interior angle is equals the exterior angle)
40+30=x
70=x
so x is 70°
