Circles - naming its parts

Name the black line

• Diameter

• Radius

• Line

• Centre

How long is the radius of this circle ?

• 6 cm

• 12 cm

• 3 cm

• 60 cm

What does the r represent ?

• radius

• diameter

• centre

The diameter passes through which part of a circle ?

• radius

• outside

• centre

• diameter

The radius or the diameter. Which is always the longest ?

• radius

• diameter

Tags

CCSS.HSG.C.A.2

If the radius is 6cm calculate the length of the diameter.

(just the number. no cm units)

If the diameter is 10 cm calculate the radius

• 10 cm

• 5 cm

• 100 cm

• 20 cm

The radius is a straight line from the centre of the circle to the circumference.

• True

• False

This line is called a diameter

• True

• False

The radius is 10 cm. Calculate the diameter.

(just the number. no cm units)