Creating a Line Normal to a Curve  

This task shows how to create a line normal to a curve. As a perpendicularity constraint is created, the line remains perpendicular to the curve even when it is moved.
Create a spline.

  1. Click Line Normal To Curve in the Profile toolbar (Line sub-toolbar).
    The Select a Curve before icon in the Sketch Tools toolbar (Tools Palette toolbar in Drafting) is activated by default to select the curve from which a line is created.

  2. Select a point on a curve to define first end point of a line.


     

  3. Select a point which does not lie on the curve to define second end point of a line. You are allowed to select this point only in a direction which is normal to the curve at the first selected point. The line is created, as well as a perpendicularity constraint (between the line and the curve).
Click Select a Curve before icon to deactivate it. In this case, you can select first end point of a line outside a curve and then select second end point on a curve to create a line normal to it. You can observe that the lines normal to a curve are created as close as possible to where you clicked on the curve for selecting second point of a line. You will get better results if, before clicking the curve, you try to position the line as perpendicular to the curve as possible.