Circle and Its Parts or Terms Related to It

What is the name of the line segment that connects two points on a circle and passes through the center?

• Radius

• Diameter

• Chord

• Tangent

What is the relationship between the radius and diameter of a circle?

• The diameter of a circle is always twice the length of its radius.

• The diameter is always half the length of its radius.

• The radius is always equal to the diameter of a circle.

• The radius and diameter of a circle are unrelated.

What is the name of the point where a circle touches a straight line?

• Point of tangency

• Circle junction

• Tangent point

• Point of intersection

If the diameter of a circle is 12 cm, what is the radius?

• 10 cm

• 4 cm

• 6 cm

• 8 cm

What is the name of the line segment that starts at the center of a circle and ends on the circle?

• Chord

• Tangent

• Diameter

• Radius

What is the name of a line segment that connects two points on the circle but does not pass through the center?

• diameter

• radius

• perimeter

• chord

What is the relationship between the central angle and the arc length in a circle?

• The arc length is proportional to the central angle.

• The arc length is equal to the central angle divided by π.

• The arc length is twice the central angle.

• The arc length is the square root of the central angle.

If two tangents are drawn from a point outside the circle to the circle, what can be said about the lengths of the tangents?

• They are unequal

• They are equal

• They are perpendicular to the radius

• They are both longer than the radius

The angle between a tangent and a radius drawn to the point of tangency is:

• 45 degrees

• 60 degrees

• 90 degrees

• 180 degrees

The Angle in a Semicircle Theorem states that:

• An angle inscribed in a semicircle is a right angle.

• An angle inscribed in a semicircle is always 60 degrees.

• An angle in a semicircle is equal to the diameter of the circle.

• An angle in a semicircle is equal to twice the measure of the intercepted arc.