Labeling Parts of Circles

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

• radius
• diameter
• circumference
• area

The distance all the way around the circle is called the...

• radius
• diameter
• circumference
• area

The perimeter of a circle is usually called the...

• radius
• diameter
• circumference
• area

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

• Radius

• Diameter

• Tangent

• Chord

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

• Radius
• Diameter

What is this?

• Circumference

• Sector

• Center

• Radius

What is this?

• Tangent

• Sector

• Diameter

• Radius

What is this?

• Diameter

• Center

• Radius

• Circumference

A straight line passing from one side of the circle, cutting through the centre to the other side of the circle is called...

• Radius

• Diameter

• Circumference

• Tangent

What is this?

• Diameter

• Segment

• Sector

• Semicircle