**3-D Cube :**

In **geometry**, a **cube** is a **three-dimensional** solid object surrounded by **six** square faces or sides that all meet each **vertex**. The **cube** is also called a **regular hexahedron** and is one of the **five platonic** solids.

The **cube** is a special type of **square prism**, which is of **rectangular** parallel **quadrilateral** and **trigonal** **trapezoidron**. The **cube** is **dual** to the **octahedron**. It has **cubical symmetry** which is also known as **octahedral symmetry**.

A **cube** is a three-dimensional case of the more general concept of a **hypercube**. It has 11 nets. If **one** has to **color** the **cube**, so that **none** of the **adjacent faces** have the **same color**, one would need **3 colors**. If the original **cube** has an edge length of **1**, its double **octahedron** has an edge length** √2**