2007-09-22 08:12:27 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
A sphere is a symmetrical geometrical object. In non-mathematical usage, the term is used to refer either to a round ball or to its two-dimensional surface. In mathematics, a sphere is the set of all points in three-dimensional space (R3) which are at distance r from a fixed point of that space, where r is a positive real number called the radius of the sphere. The fixed point is called the center or centre, and is not part of the sphere itself.
2007-09-22 15:41:54 · answer #1 · answered by Thomas C 6 · 0⤊ 0⤋
A sphere is a set of points equidistant from a unique point in space.
2007-09-22 15:29:38 · answer #2 · answered by Madhukar 7 · 1⤊ 0⤋
A three-dimensional surface, all points of which are equidistant from a fixed point.
2007-09-22 15:21:41 · answer #3 · answered by Snoopy 3 · 2⤊ 0⤋