Vector

A vector is dealing with both magnitude and direction.
==A vector is represented by a letter and two vectors are always equal if their corresponding components are equal. ==

Equal vectors are two vectors that are equal if and only if they have the same magnitude and direction.
==Parallel vectors are parallel if and only if they have the same or opposite directions. To add two vectors add the corresponding component. To multiply a vector by a scalar multiply each component by the scalar. == [|video]