To Change the Display of Tangent Edges
Use this procedure to change the line style for edges created by two tangent surfaces.
1. Click File > Options > Entity Display.
2. Under Geometry display settings, in the Tangent edges display style list, select one of the following styles:
No Display
3. Click OK in the Creo Parametric Options dialog box. A message is displayed.
4. In the message box, click No to apply the settings to the current session only.
Click Yes if you want to save the settings to a file for using later in another session.