Central Angle and Arc

What units are used for arc measures?

• linear units (inches, meters)

• degrees

• square units

• triangle units

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.

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

• BC

• BCD

• CD

• AB

Name a major arc.

• ABD

• BDA

• BCD

• DA

Find the red minor act and its measure. Then find the blue major arc and its measure.

• MN, 170; MPN 190

• MPN 190, MN 170

Find the measure of arc JH

• 93

• 130

• 120

• 95

What is the measure of arc JK?

• 55°

• 60°

• 120°

• 135°

What is the measure of ∠PTQ?

• 100°

• 140°

• 180°

• 120°