A polygon whose vertices are on a circle and whose edges are within the circle

Every point on a circle in the same distance from the

An angle whose vertex is on the circumference of a circle and whose sides include chords of the circle

The distance across the circle, through its center

An angle whose vertex is the center of the circle

The distance from a circle to its center

Half of a circle

Two or more circles with the same center

A portion of a circle and its interior bound by an arc and two radii

A segment between two points on a circle

Part of a circumference