Definition:Pole of Arc

Definition

Let $S$ be a sphere whose center is $O$.

Let $C$ be the arc of a circle on $S$, either a small circle or a great circle.

The poles of $C$ are the poles of the circle on $S$ of which $C$ is a part.

Sources

• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): pole: 2. (of a circle on a sphere)