Circle Vocabulary

Front

Circle

Back

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

Tags

CCSS.HSG.CO.A.1

Front

Radius

Back

A segment whose endpoints are the center and any point on the circle

Front

Chord

Back

A segment with endpoints on the circle

Tags

CCSS.HSG.C.A.2

Front

Diameter

Back

A chord that passes through the center of the circle

Tags

CCSS.HSG.C.A.2

Front

Tangent

Back

A line that intersects a circle at exactly one point

Tags

CCSS.HSG.C.A.4

Front

Central Angle

Back

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

Tags

CCSS.HSG.C.A.2

Front

Inscribed Angle

Back

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

Tags

CCSS.8.G.A.5

Front

Arc

Back

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

Tags

CCSS.HSG.C.B.5

Front

Minor Arc

Back

An arc with a measure less than 180º

Tags

CCSS.HSG.C.B.5

Front

Major Arc

Back

An arc with a measure greater than 180º