# Vector

## Vector

Quantity that has a magnitude, a sense and a direction.

The word vector is synonymous with geometric vector.

### Symbols

• Vectors are indicated by lowercase letters topped by an arrow, like this: $$\overrightarrow{u}$$ or $$\overrightarrow{v}$$.
• Vectors can also be indicated by a segment identifying its two end points, such as: $$\overrightarrow{\textrm{AB}}$$ ou $$\overrightarrow{\textrm{CD}}$$