Question

One of the exterior angles of a triangle is 120 and the difference of its interior opposite angles is 20. Find each angle of a triangle.

Answer 1

Let the small angle be x

so other angle =x+20

by the condition given in your question we get equation

x+x+20=120

2x=100

x=50

x+20=70

and remaining angle =180-70+50

=60

Answer 2

The angles are 50 degree, 60 degree, and 70 degree