O is the centre of a circle, and P and Q are points on it with $\angle POQ = 124^\circ$ (the angle at the centre facing the minor arc PQ). R is a point on the minor arc PQ. What is $\angle PRQ$?

Explanation

1. 01

   Since R is on the minor arc, $\angle PRQ$ stands on the MAJOR arc PQ.

2. 02

   The angle at the centre on the major arc is $360^\circ - 124^\circ = 236^\circ$.

3. 03

   $\angle PRQ = 236^\circ \div 2 = 118^\circ$.