Naming Arcs and Central Angles

Name a minor arc

• AD
• ADB
• AB
• CD

Name a major arc.

• ABD
• BDA
• BCD
• DA

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.

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.

What is the measure of arc AD?

• 38
• 142
• 180
• 153

What is the measure of arc AB?

• 140
• 142
• 180
• 153

• x = 160
• x = 40
• x = 80
• x = 360

What is the measure of arc AYB

• 50
• 100
• 180
• 260

What is the measure of ∠PTQ?

• 100°
• 140°
• 180°
• 120°

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

• 150°
• 100°
• 210°
• 105°