Properties of Sphere
The following are the properties of a sphere:
- It has no vertex or edge.
- This is not a polyhedron.
- All of the points in the sphere have the same distance to the center.
- It has a curved face, not a flat face.
- It is perfectly symmetrical.
Comparison between Circle and Sphere
| Circle | Sphere |
|---|---|
| A circle exists in a two-dimensional shape. | A sphere is a three-dimensional shape. |
| A circle can only extend in two directions, which are the x-axis and the y-axis. | It extends in all three directions, which are the x-axis, y-axis, and z-axis. |
| It does not have any volume. | It has volume because it occupies some space. |
| The area of a circle is πr2 square units. | The surface area of a sphere is 4πr2 square units. |
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Sphere Formulas
The sphere is a round 3D object. Unlike other 3D shapes, the sphere has no vertices or edges. The distance from the center of the sphere to any point on the surface is the same. In geometry, a sphere is a three-dimensional figure with a round shape. From a mathematical point of view, it is a combination of a set of points connected by common points equidistant in three dimensions. Examples of spheres include basketball, soap bubbles, and tennis balls.