Circles Quiz

What is the formula to find the circumference of a circle?

• 3πr

• 2πr

• πr

• 4πr^2

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

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

• The diameter of a circle is three times the length of its radius.

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

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

What is the measure of a central angle that intercepts an arc of 60 degrees?

• 60

• 90

• 45

• 30

What is the measure of an inscribed angle that intercepts the same arc as the central angle of 60 degrees?

• 60 degrees

• 30 degrees

• 90 degrees

• 45 degrees

What is the relationship between the measure of an inscribed angle and the measure of its intercepted arc?

• The measure of an inscribed angle is equal to twice the measure of its intercepted arc.

• The measure of an inscribed angle is equal to half the measure of its intercepted arc.

• The measure of an inscribed angle is equal to the measure of its intercepted arc.

• The measure of an inscribed angle is equal to three times the measure of its intercepted arc.

What is the relationship between the measure of a central angle and the measure of its intercepted arc?

• The measure of a central angle is greater than the measure of its intercepted arc.

• The measure of a central angle is equal to the measure of its intercepted arc.

• The measure of a central angle is half the measure of its intercepted arc.

• The measure of a central angle is unrelated to the measure of its intercepted arc.

What is the relationship between the lengths of two tangent segments drawn from the same external point?

• The lengths are unequal.

• The lengths are proportional to the distance from the center of the circle.

• The lengths are equal.

• The lengths are proportional to the radius of the circle.