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If angle 4 is 25°, what is the measure arc FBE?

If angle 4 is 25°, what is the measure arc FBE?-example-1

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Answer:

310°

Explanation:

Angle 4 is half the measure of arc FE, so that arc has measure ...

FE = 2·(25°) = 50°

Long arc FBE has the measure that completes the circle:

FBE = 360° -50° = 310°

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