Circle Geometry Diagram: Radius, Central Angle, and Arc Length #3646014 (License: Personal Use)

This geometric diagram depicts a circle centered at point O, with radius r extending to point A on the circumference. A second radius extends to point B, forming central angle θ; the corresponding arc between A and B is labeled s. Arrows indicate directionality along the radii and arc, emphasizing angular and linear measurements in circular motion or trigonometric contexts.

Commonly used in mathematics education resources, especially in high school or college-level geometry and trigonometry lessons. Matches user intent for visual aid when studying arc length formula (s = rθ), radian measure, or sector area calculations.