Question

Circle O is shown below. The diagram is not drawn to scale? If Angle r is 32, what is angle O?

Answer 1

We have to find the measure of angle O.
We already know that ∠R = 32°.
The measure of the inscribed angle ( here ∠ R ) is half the measure of the central angle ( here ∠ O ).
Therefore:
∠ O = 2 · 32° = 64°
Answer:
B ) 64°