Circles Finding Central Angles

A ____ angle is an angle whose vertex is a the center of a circle.

• supplementary

• complimentary

• central

• obtuse

Tags

CCSS.HSG.C.A.2

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.

Tags

CCSS.HSG.C.B.5

Which of the following would be a major arc in the diagram?

• BC

• BCD

• CD

• AB

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.

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

• 150°

• 100°

• 210°

• 105°

• x = 160
• x = 40
• x = 80
• x = 360

Tags

CCSS.HSG.C.A.2

What is the value of x?

• 22

• 25

• 15

• 20

Tags

CCSS.HSG.C.A.2

Find the measure of arc AB.

• 17

• 34

• 68

• 146

Tags

CCSS.HSG.C.A.2

Find the value of x. Enter your answer as a number only.

(a)  

Tags

CCSS.8.G.A.5

What is the part of the circle highlighted in red called?

• semi-circle arc

• major arc

• minor arc

• sector