Question

In circle O, ΔAOB is an equilateral triangle. What is the measure of arc AB?

Answer 1

since its a central angle, its also 40

Answer 2

@Luis_Rivera that's what i was thinking but.. 40 is not an answer.
180°
120°
90°
60°

Answer 3

There is no way around it. A central angle equals its intercepted arc
Unless there is a typo in there and it's really 60, then I make sense, It would also make the triangle equilateral

Answer 4

so the answer to my first question is equilateral?

Answer 5

yes, it is