Circles Vocabulary

Which of the following names a diameter?

• segment AC

• segment DB

• segment AB

• segment BC

Which of the following names a radius?

• segment AC

• segment DB

• segment AB

• segement BC

What is circumference?

• The distance around a circle.

• The space inside the circle.

• A line from side to side passing through the center.

• A line from the center to the side.

Tags

CCSS.HSG.C.A.2

What is the diameter?

• 8

• 16

• 10

• 4

Tags

CCSS.7.G.B.4

Is the red line a radius or diameter of the circle?

• Radius

• Diameter

Does this picture show the diameter or radius of a circle?

• Diameter

• Radius

Does this picture show the diameter or radius of a circle?

• Diameter

• Radius

The radius is....

• a line that crosses through the center and touches each edge 

• the center point of a circle 

• a line from the center point to the edge of the circle

• an element in science

What is the radius of this circle?

• 12cm

• 6cm

• 24cm

• 3cm

Tags

CCSS.7.G.B.4

What does r represent in the formula:

A = π·r²

• circumference

• radius

• diameter

• squared

Tags

CCSS.7.G.B.4