Circles Intro Vocabulary

Line segment from the center of the circle to on the circle

• Radius

• Diameter

• Chord

• Secant

Longest chord of a circle.

• radius

• diameter

• secant

• tangent

The set of points equidistant from a given point.

• Chord

• Secant

• Circle

• Tangent

A line segment that goes through the circle

• Secant

• Tangent

• Circle

• Chord

Tags

CCSS.HSG.C.A.2

A line segment that only touches the circle just once.

• Secant

• Tangent

• Diameter

• Chord

An angle inside a circle such that the vertex is at the center.

• Central Angle

• Inscribed Angle

• Arc Angle

• Minor Arc Angle

Tags

CCSS.HSG.C.A.2

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

• Edger

• Central Angle

• Inscribed angle

• Arc

An arc with a measurement less than 180 degrees

• Minor Arc

• Major Arc

• Semicircle

• Acute Arc

An Arc that equals 180 degrees

• Minor Arc

• Major Arc

• Semicircle

• Right Arc

An arc that is greater than 180 degrees

• Minor Arc

• Semicircle

• Obtuse Arc

• Major Arc