# Creating Perpendicular Line on Selected Shape

Select a shape located on the drawing to create a perpendicular line based on the shape.
Shapes that can be used as a base are lines, polylines, infinite lines, rays, circles, arcs, ellipses, elliptical arcs and B-Splines.
The following 3 methods can be used to create a perpendicular line.

• If the coordinates for the foot of a perpendicular line are fixed, select a "shape" to be used as a base, and specify the "foot point of a perpendicular line" and "end point."
• If the coordinates of the end point are fixed, select a "shape" to be used as a base, and specify the "end point".
• For specifying the length of the perpendicular line, select a "shape" to be used as a base, and specify the "foot point of a perpendicular line", "length", and "end point".

To display a command parameter to be executed, click / of command parameters, or press Tab key or / key on the keyboard.

1. Point [Line] on [Shape] menu, and click [Perpendicular Line].
Then you will be able to create a perpendicular line.
2.  Supplemental ▪ You can enter into the perpendicular line creating status by clicking on [Shape] tool bar.
3. Click a shape to be used as a base.

### When coordinates for the perpendicular line intersect point are fixed

1. Click the foot point of a perpendicular line on the drawing.
2. Click the end point of the perpendicular line on the drawing.
A line to connect the foot of the perpendicular line and end point will be created.

### When the coordinates of the end point are fixed

1. Switch the parameter on Command Window to [End Point] box, and click the end point of a perpendicular line on the drawing.
A perpendicular line is created connecting the selected shape and the end point.

### For specifying the length of the perpendicular line

1. Click the foot point of a perpendicular line on the drawing.
2. Switch the parameter on Command Window to [Length] box, and enter the length of the perpendicular line.
3. Click on the point in the drawing that determines the direction of the perpendicular line.
A perpendicular line is created from the foot of the perpendicular line at the length and direction specified.
 Supplemental ▪ You can specify the Foot point of Perpendicular line, end point and direction point by inputting X and Y coordinates in [Foot point of Perpendicular], [End Point] and [Direction Point] boxes on Command Window.