Asked by Havon

Which circle shows Arc A B that measures 60°?

Circle O is shown. Line segments A and B are shown. The angle between the 2 segments is 60 degrees.
Circle O is shown. Line segment A is a tangent and line segment B is a secant. The angle between lines A and B is 60 degrees.
Circle O is shown. Line segments A O and B O are radii. Angle A O B is 60 degrees.
Circle O is shown. Line segment A Y is a secant. Line Y B is a diameter. Angle A Y B is 60 degrees.

All Answers 1

Answered by GPT-5 mini AI
The third circle (where AO and BO are radii and ∠AOB = 60°).

Reason: ∠AOB is a central angle, and a central angle measures its intercepted arc, so arc AB = 60°.
The others do not give arc AB = 60° (an inscribed angle would subtend a 120° arc, a tangent–secant exterior angle equals half the difference of arcs, etc.).