Central Angles and Arc Measures

Given circle A, name the radii.

*Hint: There are 3*

• segment BA
• segment CA
• segment AE
• segment GD
• segment CE

Given circle A, name the chords.

*Hint: There are 2*

• segment FD
• segment CA
• segment AE
• segment GD
• segment CE

A minor arc has a measure x that is

• 0 < x < 180
• x = 180
• 180 < x < 360

True or false: The sum of the arcs of a circle is 360.

• True
• False

A major arc has a measure x that is

• 0 < x < 180
• x = 180
• 180 < x < 360

A semicircle has a measure x that is

• 0 < x < 180
• x = 180
• 180 < x < 360

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

A central angle has its vertex...

• ...on the circle
• ...outside the circle
• ...on one of the three sides of the circle
• ...on the center of the circle

A circle's major arc is often named with 3 letters.

• True
• False

What is the measure of ∠PTQ?

• 100°
• 140°
• 180°
• 120°

Tags

CCSS.HSG.C.A.2

Which answer below is a chord in the circle?