Parts of a Circle Vocabulary

A chord that passes through the center of the circle is called the...

• Radius

• Diameter

• Arc

• circumference

The distance from the center of the circle to any point on the circle is called the...

• radius

• diameter

• area

• circumference

The distance across the circle through the center is called the...

• radius

• diameter

• circumference

• area

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

• Radius

• Diameter

Tags

CCSS.HSG.C.A.2

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

• Radius

• Diameter

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

• Radius

• Diameter

What is the diameter?

• 8

• 16

• 10

• 4

Tags

CCSS.7.G.B.4

What is the radius?

• 18

• 72

• 38

• 14

Tags

CCSS.7.G.B.4

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

• Radius

• Diameter

From the center of this CD to the edge of the CD is 4 inches. How far is the distance all the way across the CD?

• 16 in

• 8 in

• 12 in

• 2 in

Tags

CCSS.7.G.B.4