Mathematical Circle Sector Diagram

A clear geometric diagram showcasing a sector of a circle. The light green shaded area represents the sector, originating from the center and extending to the circular edge. An arc with arrows prominently displays the central angle, labeled as theta (θ), which defines the size of this particular slice. The full circular shape is subtly outlined by a dark red line, providing a complete visual context for this fundamental mathematical concept.

circle - sector - geometry - angle - theta - diagram - mathematics - shape - central angle