In circle O, chord AB creates a central angle of 110°. Point C is on the major arc. What is the measure of inscribed angle ACB?
A 45°
B 55°
C 110°
D 125°
Explanation
The inscribed angle is half the intercepted arc.
Point C is on the major arc, so angle ACB intercepts the minor arc AB = 110°.
∠ACB = 110° / 2 = 55°.