Click Modify menu 3D
Operations3D
Align.At the Command prompt,
enter 3dalign.
Select the objects that you want to align.
Specify either one, two, or three source points
and then the corresponding first, second, or third destination points.
The first point is called the base point.
The selected objects are moved
from the source point to the destination point, and second and third
points, if you specify them, rotate, and tilt the selected objects.