Intro to Circles

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

A set or collection of points on the same plane that are the same distance from the same point called the center.

• radius

• circle

• circumference

• pi

A line segment in a circle that goes from the center to the circle.

• radius

• diameter

• circumference

• center of circle

The point in the middle of a circle.

• radius

• center

• diameter

• circumference

What is line segment AB?

• External Segment
• Diameter
• Radius
• Chord

Which best describes segment AB?

• chord
• secant
• tangent
• diameter

A segment whose endpoints lie on a circle is a _______.

• tangent

• chord

• radius

• central angle

The distance halfway across the circle is called the...

• radius
• diameter
• circumference
• area

Which best describes line AB?

• chord
• secant
• tangent
• diameter