Question

An exterior angle of triangle is 115 degree and it's two interior opposite angles are equal. Each of these equal angle is
1. 37 1/2°
2. 57 1/2°
3. 72 1/2°
4. 75°​

Answer 1

exteriar angle of triangle is 115

two interior opposite angle are equal that x

now x+x=115

2x=115

x= 115/2

= 571/2