# MIRROR3D Command
[GstarCAD 2027](Help%20System/GSTARCAD/2027/Index.md) → [Commands](Help%20System/GSTARCAD/2027/Commands/(Commands).md)
**Function Description:**
This command is used to create mirrored copies of selected objects.
**Command Access:**
> **Icon:** 
> **Menu:** Modify > 3D Operations > 3D Mirror
> **Ribbon:** 3D > 3D Operations > 3D Mirror
> **Toolbar:** /
> **Command:** MIRROR3D
> **Alias:** /
**Command Prompts:**
```
Select object:
Specify first point of mirror plane (3 points) or [Object/Last/Zaxis/View/XY/YZ/ZX/3points] <3points>:
```
## **Object**
Specifies a mirroring plane by selecting a planar object. The planar object can be a circle, an arc, or a 2D polyline segment.
## **Last**
Mirrors the selected objects by the previously defined mirroring plane.
## **Zaxis**
Uses one point on the plane and another point normal to the plane to define the mirroring plane.
## **View**
Aligns the mirroring plane with the viewing plane of the current viewport through a specified point.
## **XY/YZ/ZX**
Selects a specified point and defines a plane contains the selected point and is parallel with a standard plane (XY, YZ or ZX). The mirroring plane is aligned with the defined plane.
  
## **3points**
Specifies a mirroring plane by 3 points. If selecting this option by specifying a point, the Specify first point on mirror plane prompt is not displayed.
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**Related References：**
- [Commands about Moving, Rotating and Scaling 3D Objects (GstarCAD 2026)](../../2026/Commands/Command%20Groups/Commands%20about%20Moving%2C%20Rotating%20and%20Scaling%203D%20Objects.md)
**Related Concepts：**
- [About Mirroring Objects (GstarCAD 2026)](../../2026/Commands/About%20Mirroring%20Objects.md)
**Related Tasks：**
- [To Mirror Objects (GstarCAD 2026)](../../2026/Commands/To%20Mirror%20Objects.md)
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[Original help](https://www.gstarcad.net/help/GstarCAD_2027_en-US/detail/commandReferences/MIRROR3D.html) · © Gstarsoft Co., Ltd.