Given a triangle ABC, angle A = 60 degrees, angle B = 60 degrees, is it correct?

As we know from the taught school geometry course, all angles in this type of triangles will be 60 °.

Let us determine what the remaining angle of the triangle ABC will equal, when from the condition of the task we know that the angle A is equal to 60 °, while the angle B is also equal to 60 °:

The sum of the angles of our figure is 180 °.

180 – 60 – 60 = 60.

All angles of this triangle are 60 °. That is, it will be equilateral (correct).

Answer: This triangle will be correct (all angles are 60 °).