Circle Vocab & Properties

What is the line segment from the center of a circle to any point on the circle called?

• Diameter

• Radius

• Chord

• Tangent

Which part of a circle is the longest line segment that passes through the center?

• Radius

• Chord

• Diameter

• Secant

What is the name of the angle formed by two radii in a circle?

• Inscribed angle

• Central angle

• External angle

• Tangent angle

What is the term for a line that touches a circle at exactly one point?

• Secant

• Chord

• Tangent

• Radius

What is the name of the region bounded by two radii and the arc between them?

• Segment

• Sector

• Arc

• Chord

What is the fixed point at the center of a circle called?

• Radius

• Diameter

• Center

• Circumference

Which of the following is true about the diameter of a circle?

• It is a curved line.

• It does not pass through the center.

• It touches the boundary at one point.

• It is a straight line passing through the center.

What is the term used for the length of the boundary of a circle?

• Radius

• Diameter

• Circumference

• Sector

How many radii does a circle have?

• One

• Two

• Infinite

• Ten

What is the longest chord in a circle called?

• Tangent

• Secant

• Diameter

• Arc