Practice Arcs and Central Angles

Front

What is a minor arc?

Back

A minor arc is a part of a circle that measures less than 180 degrees.

Front

What is a major arc?

Back

A major arc is a part of a circle that measures greater than 180 degrees.

Front

What is the measure of a semicircle?

Back

A semicircle measures exactly 180 degrees.

Front

How do you identify a minor arc in a circle?

Back

A minor arc is identified by two endpoints and is the shorter path between them on the circle.

Front

How do you identify a major arc in a circle?

Back

A major arc is identified by two endpoints and is the longer path between them on the circle.

Front

What is the relationship between central angles and arcs?

Back

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

Front

If ∠PTQ measures 140°, what is the measure of the arc PTQ?

Back

The measure of arc PTQ is also 140°.

Front

What is the formula to find the measure of an arc?

Back

The measure of an arc can be found using the formula: Arc Measure = Central Angle Measure.

Front

Name an example of a minor arc in a circle with points A, B, and C.

Back

An example of a minor arc is AB.

Front

Name an example of a major arc in a circle with points A, B, and C.

Back

An example of a major arc is ACB.