Geometry Circles Vocab

Lines AO and BO are tangent. What is the measure of BO?

• 20

• 15

• 10

• 5

• A point of tangency
• A tangent
• A center
• Outside of circle C

• Arc
• Sector
• Segment
• Circumference

• secant
• chord
• tangent line
• diameter

The distance around a circle

• Diameter

• Radius

• Circumference

• Area

Name a Tangent

• Segment AG

• Line AG

• Line DE

• Segment

• Name the circle: Circle B
• Name the circle: Circle DE
• Name the circle: Circle A
• Name the circle: Circle DBC

Find x

• 10

• 5

• 18

• 9

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

• Chord

• Diameter

• Radius

• Inscribed Angle

If the measure of arc ABC = 210°, what is the measure of ∠AOC?

• 150°

• 100°

• 210°

• 105°