In an equilateral triangle, the value of each exterior angle is:

120°

In an equilateral triangle,

Each angle of equilateral triangle is 60° .

If ABC is a triangle,

Exterior angle of a triangle is equal to the sum of the interior opposite angles.

∠A = ∠B = ∠C = 60°.

According the theorem

The value of each exterior angle = 60° + 60° = 120°