In a cyclic quadrilateral PQRS, if angle P is 110°, what is the measure of angle R?

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Accepted Answer

1. In a cyclic quadrilateral, opposite angles are supplementary.

2. So $\angle P + \angle R = 180^\circ$.

3. Given $\angle P = 110^\circ$, then $\angle R = 180^\circ - 110^\circ = 70^\circ$.

4. Thus $\angle R = 70^\circ$.

FINAL_ANSWER: a

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