Definition:Perpendicular (Linear Algebra)

Definition
Let $\mathbf{u}$, $\mathbf{v}$ be non-zero vectors in the Euclidean space $\R^n$.


 * $\mathbf{u}$ and $\mathbf{v}$ are said to be perpendicular iff the angle between them is a right angle.

Also see

 * Orthogonal
 * Non-Zero Vectors Orthogonal iff Perpendicular