Circle Basics, Central Angles, and Arcs.

What best describes segment AB?

• chord
• secant
• tangent
• diameter

Match the following parts pictured in the image with their most appropriate classification.

• Chord

• F

• Tangent line

• E

• Radius

• AC

• Diameter

• BD

• Secant line

• BC

Name a major arc.

• BA

• BDA

• BCD

• DA

Match each of the parts with the best choice.

• Major Arc

• AB

• Minor Arc

• AC

• Central angle

• ACB

• Diameter

• AEC

• Semicircle

• BOC

Find the measure of arc MN.

What is the measure of arc AB?

• 38

• 142
• 52

• 153

Find the measure of arc JH

• 75

• 130
• 105

• 95

Find the arc length of the bolded section.

• 31.5π

• 6.2π

• 2.5π

• 240.8π

Find the arc length.  Leave your answer in terms of π.