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What is a Central Angle Formula?

67. What is a Central Angle Formula?

1. Central Angle Measure = (Arc Length / Radius) * 180°
2. Central Angle Measure = (Arc Length + Radius) * 180°
3. Central Angle Measure = (Arc Length - Radius) / 180°
4. Central Angle Measure = (Arc Length * Radius) * 180°

Answer

The correct answer is: A) Central Angle Measure = (Arc Length / Radius) * 180°

Explanation

The central angle formula is used to compute the size of a circle's central angle. A central angle is an angle whose vertex is at the middle of a circle and whose sides are two circle radii.

The formula for calculating the size of a central angle is: Central Angle Measure = (Arc Length / Radius) * 180°