Question

Answer this question please

Answer 1

Step-by-step explanation:

as one side of base from exterior angle is 100°

100°+y= 180 ( lie on line)

y= 180°-100°

y=80°

similarly

120°+ x=180

x= 180°-120°

x= 60°

x+y+z= 180°. ( sum of all angle are 180°)

60°+80°+z=180°

140°+z =180°

z= 180°-140°

z= 40°

all angles are 60°,80°,40°