Geometryeasy · Past Paper
If O is the center of the circle and angle AOB = 110 degrees, find angle ACB (where C is on the major arc).
A55 degrees
B110 degrees
C220 degrees
D70 degrees
✓ Correct Answer: A — 55 degrees
Angle at the circumference is half the angle at the center: 110/2 = 55 degrees.
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