Question

please give me solution urgently​

Answer 1

Answer:

it all are correct but first one is not correct

Answer 2

Answer:

1. the angles are

1×180°/(1+4+4)=20°

4×180°/(1+4+4)=80°

4×180°/(1+4+4)=80°

2.one angle is 70°

sum of the other two angles

(180-70)°=110°

each of the other two angles are 110/2°=55°

3.one angle is 60°

sum of the other two angles (180-60)°=120°

let the 3rd angle is x

then 2nd angle is 2x

so,

x+2x=120

=> 3x=120

=> x=120/3=40

so, 2nd angle is 2×40°=80° and 3rd angle is 40°