Practice With Circles

Find the measure of arc AB.

• 17

• 34

• 68

• 146

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

• 150°

• 100°

• 210°

• 105°

Find the missing measurement.

• A

• B

• C

• D

• 67.5°
• 90°
• 22.5°
• 45°

What is the m∠U?

• 38

• 19

• 76

• 90

• A
• B
• C
• D

What is the measure of angle DEF?

• 72 degrees

• 73 degrees

• 74 degrees

• 75 degrees

An angle whose vertex is the center of a circle is a(n) ______.

• inscribed angle

• acute angle

• obtuse angle

• central angle

How many degrees are in a semicircle?

• 90

• 180

• 270

• 360

Which segment is not a radius?

• CA

• CB

• CD

• LM