A sphere has zero corners.
A corner, also known as a vertex, is formed where edges meet. A sphere is a perfectly round, three-dimensional object with a continuous curved surface. It lacks any edges or flat faces, and therefore it cannot have any corners. Instead, it only has a single, curved face.
Essentially, the absence of edges on a sphere directly results in the absence of corners. The sphere's defining characteristic is its smooth, continuous surface, which distinguishes it from polyhedra (shapes with flat faces and edges), which possess corners.
