# PerpendicularVector Command

From GeoGebra Manual

Revision as of 14:19, 8 August 2011 by Andrea.duringer (talk | contribs)

- PerpendicularVector[Line]
- Returns the perpendicular vector of the line.
**Note:**A line with equation*ax + by = c*has the perpendicular vector*(a, b)*.

- PerpendicularVector[Segment]
- Returns the perpendicular vector of the segment with the same length.

- PerpendicularVector[Vector v]
- Returns the perpendicular vector of the given vector.
**Note:**A vector with coordinates*(a, b)*has the perpendicular vector*(-b, a)*.

## CAS-View

- PerpendicularVector[Vector v]
- Returns the perpendicular vector of the given vector.

**Example:**

`PerpendicularVector[(3,2)]`

yields *{-2,3}*.

`PerpendicularVector[(a,b)]`

yields *{-b,a}*.