The angle between two radii stemming fro the same point (Fig. 1).
| Value range | |
| Radians | Degree | |
| 0 < Θ < 2π | 0° < Θ < 360° | |
| Fig. 1. Central Angle schematic | ||
| Formula | |
|---|---|
Convex Central Angle ( 0 < \Theta < \pi) | Reflex Central Angle ( \pi < \Theta < 2 \pi) |
\Theta = \frac{L}{R} | \Theta = 2\pi - \frac{L}{R} |
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|
| Fig. 2. Convex Central Angle | Fig. 3. Reflex Central Angle |
