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Concept

Arc Measure

The measure of an arc, commonly referred to as its arc measure, is equal to the measure of its corresponding central angle. In the diagram, the measure of is equal to the measure of
Circumference with center C, points A, B, and D that lie on it, angle ACB and arc measure AB

Suppose the measure of is given as The measure of the corresponding major arc can be found by subtracting from the measure of the entire circle.

Circumference with center C, points A, B, and D that lie on it, angle ACB and arc measures AB and ADB
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