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} |
Fig. 2. Convex Central Angle | Fig. 3. Reflex Central Angle |