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ErinWeeks
In circle O, mR = 23. Find mO. (The figure is not drawn to scale.)
A. 46 B. 23 C. 67 D. 157
I suppose you mean mNRQ = 23, and you need to find mNOQ. Since both angles stem from the same chord NQ, R is on the circumference, then the angle at centre is double that on the circumference.