Circles Vocabulary

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

• Radius

• Chord

• Diameter

• Tangent

A set of points equidistant from a given point called the center

• Radius

• Major Arc

• Circle

• Semicircle

A segment with endpoints on the circle.

• Secant

• Diameter

• Chord

• Radius

Tags

CCSS.HSG.C.A.2

A chord that passes through the center.

• Diameter

• Secant

• Tangent

• Radius

A line that intersects the circle in two places.

• Chord

• Tangent

• Diameter

• Secant

A line that intersects the circle at exactly one place.

• Diameter

• Tangent

• Chord

• Secant

The point at which the tangent line intersects the circle.

• Arc

• Circle

• Major Arc

• Point of Tangency

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

• Central Angle

• Inscribed Angle

• Chord

• Arc

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

• Central Angle

• Arc

• Inscribed Angle

• Secant

Tags

CCSS.HSG.C.A.2

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

• Minor Arc

• Major Arc

• Semicircle

• Arc