Central Angles of Circles

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 minor arc

• AD
• ADB
• AB
• CD

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

• A
• B
• C
• D