Arc and Angle Measures Warm-up #1

Front

What is the measure of arc MO?

Back

104

Front

What is the measure of angle A (m∠A)?

Back

40

Front

What is the measure of arc LK?

Back

66

Front

What is the measure of arc WY?

Back

84

Front

What is the value of θ?

Back

75

Front

Define an arc in a circle.

Back

An arc is a portion of the circumference of a circle.

Front

What is the relationship between the central angle and the arc it subtends?

Back

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

Front

How do you calculate the measure of an arc given the central angle?

Back

The measure of the arc is equal to the measure of the central angle in degrees.

Front

What is the formula for finding the length of an arc?

Back

Length of arc = (θ/360) * 2πr, where θ is the central angle and r is the radius.

Front

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

Back

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