Circles Angles and Arcs

Name a minor arc

• AD

• ADB

• AB

• CD

Name a major arc.

• ABD

• BDA

• BCD

• DA

What is the measure of arc AD?

• 38

• 142

• 180

• 153

What is the measure of arc WYZ?

• 231

• 255

• 168

• 200

What is this called?

• Radius

• Central Angle

• Major Arc

• Inscribed Angle

inscribed angle: an angle with its vertex _____________ the circle

• at the center of

• on

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.

Convert π radians to degrees.

• 90⁰

• 180⁰

• 360⁰

• 60⁰

Convert 150⁰ to radians

• 5π/6

• 3π/4

• 7π/6

• 2π/3

What is 7π/4 radians in degrees?

• 300

• 135

• 315

• 45