Central Angles and Arc Length

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.

The sum of all the measures of the arcs around a circle equals ___.

• 100

• 180

• 360

• 720

Find the measure of arc JKM

Find the measure of arc JM

• A
• B
• C
• D

Solve for x.

• x = 6.45

• x = 8

• x = 12.6

• x = 7

What is the measure of arc AB?

• 140

• 142

• 180

• 153

Name a minor arc

• AD

• ADB

• AB

• CD

Find the length of the arc to 2dp

• 31.42cm

• 15.71cm

• 282.74cm

• 23.56cm