Identify Parts of the Circle

a straight line passing from side to side through the center of a body or figure, especially a circle or sphere

• Diameter

• Circumference

• Area

• Radius

a straight line from the center to the circumference of a circle or space

• Diameter

• Circumference

• Area

• Radius

Is this Radius or Diameter?

• Radius

• Diameter

What is the radius?

• 18

• 72

• 38

• 14

Name the pictured part of the circle.

• Diameter

• Sector

• Radius

• Central Angle

• Arc

Match the following part of the circle with its correct label.

• Chord

• Point S

• Tangent Line

• Center

• Diameter

• Radius

What is the diameter?

• 8

• 16

• 10

• 4

Which part of the circle is represented in the image?

• diameter

• radius

• circumference

Which part of the circle is represented in the picture?

• diameter

• radius

• circumference

A line segment from the center of a circle to any point on the circle is called the:

• diameter

• radius

• circumference