Answer:
x=40°
y=88°
z=52°
Explanation:
Solution Given:
x+140°=180°
Since the sum of the angle of a linear pair or straight line is 180°.
solving for x.
x=180°-140°
x=40°

y°=88°
Since the vertically opposite angle is equal.
therefore, y=88°

z+128°=180°
Since the sum of the angle of a linear pair or straight line is 180°.
solving for z.
z=180°-128°
z=52°