What type of circle is defined as any circle other than a great circle?

A small circle is defined as any circle that is not a great circle. To understand this concept, it’s essential to grasp the definitions of both terms.

A great circle is the largest possible circle that can be drawn on a sphere, and it is formed by a plane that passes through the center of the sphere. In contrast, a small circle lies parallel to a great circle and does not pass through the center; therefore, it is smaller in radius than the radius of the sphere it resides on.

For instance, the equator of Earth is a great circle, while any other circle of latitude is a small circle. The concept of small circles is fundamental in various fields, including navigation and geography.

The other terms provided may seem relevant but are either not commonly used in this context or do not accurately describe circles on a sphere. Understanding the distinction between great circles and small circles is critical for comprehending spherical geometry and navigation principles.