Spherical Cross-Section: Intersection Curve of a Plane and a Sphere

This GeoGebra example demonstrates the cross-section formed when a plane intersects a sphere. Using commands such as Sphere, Plane, and IntersectPath, it constructs spheres and cutting planes to illustrate a key property in solid geometry: the intersection of a plane with a sphere is always a circle, whose radius decreases as the distance from the plane to the sphere's center increases. The constr