Prove using a common notion that if P and Q are any points o

Prove using a common notion that if P and Q are any points on a circle with center O and radius OA, then OP is congruent to OQ. Please provide details, explaining the steps.

Solution

any point on the circle is equidistant from the center so OP and OQ would also be equal to radius r of the circle,so OP is congruent to OQ.