Question

What is the definition of a sphere?

Short answer

A sphere is a collection of points that are all located at the same r-distance from a specific point.

Step-by-step solution

Step 1. Definition of sphere compared to that of a circle.

The geometrical equivalent of a two-dimensional circle in three dimensions is a sphere.

Step 2. A proper definition of a sphere

In three-dimensional space, a sphere is a collection of points that are all located at the same r-distance from a specific point. The radius of the sphere is denoted by the letter r, and the specified point represents its center.