Parts of Circles

The set of points equidistant from a given point (the center).

• radius

• secant

• circle

• point of tangency

Tags

CCSS.HSG.CO.A.1

CCSS.HSG.GPE.A.1

A segment with endpoints at the center and on the circle.

• diameter

• chord

• minor arc

• radius

Tags

CCSS.HSG.C.A.2

A segment with endpoints on the circle.

• arc

• central angle

• radius

• chord

Tags

CCSS.HSG.C.A.2

A chord that passes through the center.

• radius

• diameter

• inscribed angle

• semicircle

Tags

CCSS.HSG.C.A.2

A line that intersects the circle in two places.

• secant

• tangent

• major arc

• radius

A line that intersects the circle at exactly one place.

• circle

• inscribed angle

• central angle

• tangent

Tags

CCSS.HSG.C.A.4

The point at which the tangent line intersects the circle.

• point of tangency

• tangent

• secant

• central angle

Tags

CCSS.HSG.C.A.4

An angle with a vertex at the center, and two sides that and radii.

• inscribed angle

• central angle

• point of tangency

• semicircle

Tags

CCSS.HSG.C.A.2

An angle with a vertex on the circle, and two sides that are chords.

• inscribed angle

• central angle

• secant

• minor arc

Tags

CCSS.HSG.C.A.2

A portion of the edge of the circle defined by two endpoints.

• arc

• inscribed angle

• secant

• central angle

Tags

CCSS.HSF.TF.A.1

CCSS.HSG.C.B.5