This classic riddle asks: what has a center but no beginning or end?
The answer is a circle.
A circle has a clearly defined center point, but its edge forms one continuous loop. Because the line goes around endlessly, there is no natural place where the circle begins and no natural place where it ends.
That makes a circle a perfect fit for every part of the clue. Other shapes have centers too, but their edges are usually made of separate sides and corners. A circle is different because its boundary is continuous.
The riddle sounds mysterious because “beginning” and “end” usually make us think about time or stories. Here, the clue is describing a simple geometric shape instead.
