Aligns objects with other objects in 2D and 3D.
Specify up to three points on the object to be aligned. Then specify up to three corresponding points for the destination.

The following prompts are displayed.
- Select objects
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Selects one or more objects to align.
Selected objects will be moved and rotated so that the base point and the X and Y axes of the source object align in 3D space with the destination. 3DALIGN works with dynamic UCS (DUCS), so you can dynamically drag the selected objects and align them with the face of a solid object.
- Base point
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Specifies a point to serve as a base point on the source object you want to move into alignment with the destination base point.
- Second point
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Specifies a point on the source object’s X axis.
The second point specifies a new X axis direction within a plane parallel to the XY plane of the current UCS.
- Third point
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Specifies a point on the object’s positive XY plane.
The third point sets the orientation of the X and Y axes of the source object.
- Continue
- Skips forward to destination point specification prompts. Use this option if the X and Y axes of the source should be parallel with the X and Y axes of the current UCS.
- Copy
- Creates and aligns a copy of the source object instead of moving it.
- First destination point
- Defines the destination of the base point of the source object. Note: If the destination is a plane on an existing solid object, you can define the destination plane with a single point by turning on dynamic UCS.
- Second destination point
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Specifies a new X axis direction for the destination within a plane parallel to the XY plane of the current UCS.
- Third destination point
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Sets the orientation of the X and Y axes of the destination plane.
- Exit
- Specifies that the X and Y axes of the destination are parallel with the X and Y axes of the current UCS.