PRACTICE Circles 24 25 Acc Geo

Front

What is a major arc in a circle?

Back

A major arc is an arc that measures more than 180 degrees.

Front

What is a minor arc in a circle?

Back

A minor arc is an arc that measures less than 180 degrees.

Front

If the sum of two angles is 180 degrees, what can we say about those angles?

Back

They are supplementary angles.

Front

What is the formula for the circumference of a circle?

Back

The circumference C is given by the formula C = 2πr, where r is the radius.

Front

How do you calculate the measure of an arc in a circle?

Back

The measure of an arc can be calculated using the central angle that subtends the arc.

Front

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

Back

The circumference is directly proportional to the radius; doubling the radius doubles the circumference.

Front

What is the measure of a semicircle?

Back

A semicircle measures 180 degrees.

Front

If the radius of a circle is 10 inches, what is the circumference?

Back

The circumference is 20π inches.

Front

What is the measure of Arc AB if it is a minor arc measuring 95 degrees?

Back

Arc AB measures 95 degrees.

Front

What is the difference between a major arc and a minor arc?

Back

A major arc is greater than 180 degrees, while a minor arc is less than 180 degrees.