Basic Concept of Spheres

A sphere is a 3D round shape where all points on the surface are at an equal distance from a single point, called the centre.
Example: The shape of a laddoo, a ball, a shot put

1. It is symmetrical in all directions.
2. It has only a curved surface area.
3. It has no edges or vertices.
4. Any point on the surface is at a constant distance from the centre; this characteristic is known as a radius.
5. A sphere is not a polyhedron because it does not have vertices, edges, or flat faces. A polyhedron is an object that should definitely have a flat face.
6. Air bubbles take up the shape of a sphere because the sphere's surface area is the least.
7. Among all the shapes with the same surface area, the sphere would have the largest volume.