# Category:Spheres

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This category contains results about **Spheres** in the context of **Solid Geometry**.

Definitions specific to this category can be found in Definitions/Spheres.

A **sphere** is a surface in solid geometry such that all straight lines falling upon it from one particular point inside it are equal.

In the words of Euclid:

*When, the diameter of a semicircle remaining fixed, the semicircle is carried round and restored again to the same position from which it began to be moved, the figure so comprehended is a***sphere**.

## Subcategories

This category has the following 4 subcategories, out of 4 total.

### C

- Circumference of Geometric Figure (empty)
- Concentric Spheres (empty)

### I

- Inscribe (empty)

## Pages in category "Spheres"

The following 28 pages are in this category, out of 28 total.

### C

- Construction of Cube within Given Sphere
- Construction of Polyhedron in Outer of Concentric Spheres
- Construction of Polyhedron in Outer of Concentric Spheres/Porism
- Construction of Regular Dodecahedron within Given Sphere
- Construction of Regular Icosahedron within Given Sphere
- Construction of Regular Octahedron within Given Sphere
- Construction of Regular Tetrahedron within Given Sphere