Click Modify
menu 3D
OperationsAlign. At the Command prompt,
enter align.
Select the objects that you want to align.
Specify a source point and then the corresponding
destination point. To rotate the object, specify a second source
point followed by a second destination point.
Press Enter to end the command.
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.