Question

4. If the exterior angle of a triangle is 140° and its interior opposite angles are equal,
find all the interior angles of the triangle.​

Answer 1

Answer:

let one angle be x

so x+140=180

x=40

but second and third angle are equal

let second is y

so x+y+y=180(angle sum property of40 triangle

40+2y=180

2y=140

y=70

so three interior angle are 40,70,70