You can create a plane tangent to a surface passing through a
specified point.
Before you begin: You must a 3D Shape
containing geometry.
From the
section of the action bar, click Plane.
Select
Tangent to surface.
In the Surface box, select a reference surface.
In the Point box, select a reference point.
A plane tangent to the surface at the specified point is displayed.
If the reference point does not lie on the surface, the plane is aligned to the normal
projection direction from the point to the surface or its tangential prolongation.
Click OK to create the plane.
The plane
(identified as
Plane.xxx) is added
to the
tree.