Practice Arcs and Central Angles

Front

What is a major arc?

Back

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

Front

What is a minor arc?

Back

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

Front

What is the measure of a semicircle?

Back

A semicircle measures exactly 180 degrees.

Front

How do you calculate the measure of a central angle?

Back

The measure of a central angle is equal to the measure of the arc it intercepts.

Front

What is the relationship between the measures of arcs and their corresponding central angles?

Back

The measure of an arc is equal to the measure of its corresponding central angle.

Front

If the measure of arc AB is 142 degrees, what is the measure of the central angle AOB?

Back

The measure of the central angle AOB is also 142 degrees.

Front

What is the formula for finding the measure of an arc in a circle?

Back

The measure of an arc can be found using the formula: (central angle/360) * circumference of the circle.

Front

What is the total measure of all arcs in a circle?

Back

The total measure of all arcs in a circle is 360 degrees.

Front

If arc WYZ measures 231 degrees, what type of arc is it?

Back

Arc WYZ is a major arc because it measures greater than 180 degrees.

Front

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

Back

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