Central Angles

What is the measure of arc AD?

• 38

• 142

• 180

• 153

Find the measure of < UTW.

• A

• B

• C

• D

What is the relationship between a central angle and its arc?

• The angle is half of the arc.

• The arc is half of the angle.

• The arc is smaller than the angle.

• They are congruent.

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

• 150°

• 100°

• 210°

• 105°

• F
• G
• H
• J

Which statement is true for central angles?

• m(angle) = m(intercepted arc)

• m(angle) = ½ m(intercepted arc)

• m(angle) = ½ (big arc + little arc)

• m(angle) = ½ (big arc - little arc)

Find the measure of arc AB.

• 17

• 34

• 68

• 146

• A
• B
• C
• D

Solve for x. 

• 5

• 20

• 40

• 85

Find the measure of arc JK.

• 339

• 159

• 201

• 21