Question

If an exterior angle of a triangle is 130° and one of the interior opposite angle is 60° .find the other interior opposite angle

Answer 1

sum of exterior angle in a triangle = sum of two interior angles in a triangle.

so,

130 = 60 + X
X = 130-60
X = 70°

therefore the interior opposite angle is 70°.

Answer 2

let the other angle be x
exterior angle = sum of opposite interior angles
130=60 + x
x= 130-60
x= 70
therefore, the other opposite interior angle is 70 degree.

hope it helps!