Angle Bisector between 3D Lines

Tool(s): Angle Bisector

You can use the Angle Bisector tool to draw an angle bisector between 3D lines. The lines must have a point in common; lines that merely intersect are not enough. The lines can already exist, or you can define them by specifying their start and endpoints. The starting point of the angle bisector can be the point the two lines have in common or any other point. The angle bisector is in the plane defined by these two lines or parallel to this plane.

To draw an angle bisector between 3D lines

1. Click Angle Bisector (How).
   

   Activate Angle Bisector in one of the following ways

   • Menu bar: Create Draft

   • Palette: Tools Create area in the following module(s):

   Draft

   3D Modeling

2. Click a line or enter its end points.
   

   • Click the point.
   • Align to points using the linear snap function and click the point.
   • Define the point by making entries in the dialog line.

   Tip: To find out how to enter points in Allplan, see Precision Drawing.

   Tip: The shortcut menu and dialog line provide tools and options to assist you in the process of entering points. For more information, see Tools and Options.

3. Enter the second line.
4. Enter the start point of the angle bisector; this may be the common start point of the lines or any point.
5. Enter the length of the angle bisector in one of the following ways:
   • Enter a value in the dialog line and press Enter to confirm.
     When you enter a positive value, the smaller angle is divided; in the case of negative values, the (larger) opposite angle.
   • Click an existing point.

     The angle bisector is in the plane formed by the two lines or parallel to it.

Example