Circle Vocabulary

The distance from the center of a circle to the boundary of a circle (half of the diameter).

• Chord

• Diameter

• Radius

• Inscribed Angle

A segment/chord that runs through the center of the circle (the longest chord).

• Chord

• Diameter

• Radius

• Inscribed Angle

An angle whose vertex (corner) is at the center of the circle.

• Major Arc

• Minor Arc

• Central Angle

• Inscribed Angle

The short way around a circle that is less than 180 ^o.

• Minor Arc

• Major Arc

• Semi-Circle

• Central Angle

This is a picture of ___________.

• Chord

• Diameter

• Radius

• Inscribed Angle

A segment with 2 endpoints on the circle.

• Chord

• Diameter

• Radius

• Inscribed Angle

This is a picture of ___________.

• Chord

• Diameter

• Radius

• Inscribed Angle

This is a picture of ___________.

• Chord

• Diameter

• Radius

• Inscribed Angle

An angle whose vertex (corner) is on the circle.

• Major Arc

• Minor Arc

• Central Angle

• Inscribed Angle

This is a picture of ___________.

• Major Arc

• Minor Arc

• Central Angle

• Inscribed Angle