Circles Quiz (Parts, Area and Circumference)

Name the pictured part of the circle.

• Radius

• Central Angle

• Sector

• Center

• Arc

Name the pictured part of the circle.

• Center

• Sector

• Radius

• Central Angle

• Arc

Name the pictured part of the circle.

• Diameter

• Sector

• Radius

• Chord

• Arc

Name the pictured part of the circle.

• Radius

• Central Angle

• Sector

• Center

• Arc

What is circumference?

• The distance around a circle.

• The space inside the circle.

• The length of the straight line segment that passes through the center of the circle and whose endpoints lie on the circle.

• The line from the center of a circle to any point on its edge.

Which of the following is the formula for the CIRCUMFERENCE of a circle? (Select all that apply)

•  $2\pi r$  

•  $\pi d$  

•  $2\pi r^2$  

•  $\pi r^2$  

What is the area of a circle?

• The distance around a circle.

• The space inside the circle.

• The length of the straight line segment that passes through the center of the circle and whose endpoints lie on the circle.

• The line from the center of a circle to any point on its edge.

Which of the following is the formula for the AREA of a circle?

•  $2\pi r$  

•  $\pi d$  

•  $2\pi r^2$  

•  $\pi r^2$  

What is π ? (Best Choice)

• The ratio of the circumference of any circle to its diameter.
• Exactly 3.14
• Exactly 3.1415
• Exactly 3.141593

What is the diameter?

• 8
• 16
• 10
• 4