Introduction to Circle Geometry

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

• diameter
• radius
• π
• center

If you are given the diameter, how can you calculate the radius?

• Multiply the diameter by 2
• Divide the diameter by 2
• Add 2 to the diameter
• Subtract 2 from the diameter

Which segment is the diameter?

• AC
• BD
• LM
• CE

Which segment is a radius?

• LM
• DC
• BD
• ML

A given point directly in the middle of a circle.

• Radius

• Diameter

• Center

• Point

A line that touches (intersects) the circle only once from the outside.

• Secant

• Chord

• Tangent

• Line

The place where the tangent line touches the circle is called the

• Point of Tangerine

• Point of Transparency

• Point of Tangency

• Point of Tangential

Circles add to how many degrees?

• 180º

• 360º

• 520º

• 300º

Line AB is a

• Diameter

• Secant Line

• Tangent Line

• Radius

BT is a

• Chord

• Diameter

• Line

• Radius