Arcs and Central Angles Arc Length

The sum of all central angles in a circle equals ___.

• 100

• 180

• 360

• 720

Determine the value of x.

• 80

• 120

• 160

• 200

An ___ is curved line that goes around a circle connecting two endpoints.

• Angle

• Arc

• Radius

• Diameter

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.

Name a minor arc

• AD

• ADB

• AB

• CD

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.

Name a major arc.

• ABD

• BDA

• BCD

• DA

Find the measure of arc JKM

Find the measure of arc JM

Solve for x.

• x = 6.45

• x = 8

• x = 12.6

• x = 7