# perpendicular

This command generates a straight line in the geometry perpendicular to the selected object that cross the introduced point.

## Inline mode usage

perpendicular -h
Displays the help file that summarizes the parameters for this command.
perpendicular –n <resulName> -s <selectionName> -p <pX> <pY> <pZ> <length>
Generate a straight line normal to the selectionName curve/surface and crossing the point <pX> <pY> <pZ> with the specific length.

## Interactive mode usage

Invocation
perpendicular
Parameters
• Point in the perpendicular line.
• Length of the line.

## Example

The following example shows how to insert a perpendicular line to a surface generated by revolving a line.

command> line
First point [x y z] 0.2 0 0
Second point [x y z] 0.2 0 1
command> revolve
Select curves on screen (Press enter when done) 
Axis point 1 [x y z] 0 0 0
Axis point 2 [x y z] 0 0 1
Initial Angle [degrees] {default 0.0} 
Final Angle [degrees] {default 360.0} 90
command> perpendicular
Insert the coordinates of a point in the perpendicular line [x y z] 0.5 0.5 0.0
Insert the length of the perpendicular line 0.75
command>