Circle, Chords, Diameters, Sectors

The distance around the circle.

• congruent circles

• semicircle

• arc

• circumference

An arc of a circle whose endpoints are the endpoints of a diameter.

• semicircle

• major arc

• minor arc

• circle

A continuous part of a circle between two points on the circle.

• circle

• arc

• circumference

• tangent line

An angle whose vertex is the center and whose sides are the radii of the circle.

• radius

• arc

• central angle

• secant line

A line that intersects a circle in exactly two points.

• diameter

• central angle

• arc

• secant line

Circles who's radii are congruent.

• congruent circles

• circumference

• sector of a circle

• major arc

Circles that lie in the same plane and have the same center.

• arc

• concentric circles

• central angle

• secant line

An arc that is larger than the semicircle.

• semicircle

• circle

• major arc

• adjacent arcs.

A region of a circle bounded by an arc of the circle and two radii to the arc's endpoints.

• chord

• second line

• radii

• sector of a circle

Arcs on the same circle that have exactly one point in common.

• adjacent arcs

• circle

• point of tangency

• minor arc