Exploring Circle Parts and Angles

What is the term for a line segment whose endpoints lie on the circle?

• Radius

• Chord

• Diameter

• Tangent

Which part of a circle is a line that touches the circle at exactly one point?

• Secant line

• Chord

• Tangent line

• Diameter

What is the longest chord in a circle?

• Radius

• Diameter

• Secant

• Tangent

If the radius of a circle is 5 cm, what is the diameter?

• 5 cm

• 10 cm

• 15 cm

• 20 cm

A line that intersects a circle at two points is called a:

• Tangent line

• Secant line

• Chord

• Radius

Which of the following is a part of a circle that is larger than a semicircle?

• Minor arc

• Major arc

• Chord

• Radius

If the diameter of a circle is 14 cm, what is the radius?

• 3.5 cm

• 7 cm

• 14 cm

• 28 cm

What is the term for an angle formed by two radii of a circle?

• Inscribed angle

• Central angle

• Tangent angle

• Secant angle

Which angle is formed by two chords in a circle that share an endpoint?

• Central angle

• Inscribed angle

• Tangent angle

• Secant angle

What is the term for a part of a circle that is smaller than a semicircle?

• Major arc

• Minor arc

• Chord

• Diameter