Geometry Review Central Arcs

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

• 150°

• 100°

• 210°

• 105°

Solve for x. 

• 5

• 20

• 40

• 85

Which is true of a minor arc?

• It forms half a circle.

• It forms a whole circle.

• It measures greater than 180 degrees. 

• It measures less than 180 degrees.

Which is true of a major arc?

• Forms half a circle.

• Forms a whole circle.

• Measures greater than 180 degrees.

• Measures less than 180 degrees.

Name a major arc.

• ABD

• BDA

• BCD

• DA

Name a semicircle.

• AD

• ABC

• BA

• BCA

What is the measure of arc AB?

• 140

• 142

• 180

• 153

What is the measure of arc WYZ?

• 231

• 255

• 168

• 200

• x = 160
• x = 40
• x = 80
• x = 360

64

116

180

32

• 64

• 116

• 180

• 32