# GCCONCENTRIC [GstarCAD 2027](Help%20System/GSTARCAD/2027/Index.md) → [Commands](Help%20System/GSTARCAD/2027/Commands/(Commands).md) → [G](Help%20System/GSTARCAD/2027/Commands/G/(G).md) ## Function Description: Constrains two arcs, circles, or ellipses to share the same center point. ## Command Access: Icon:   Menu Item: Parameters (P) > Geometric Constraints (G) > Concentric (N) Ribbon: Parameters > Geometric > Concentric Toolbar:  / Command Line: GCCONCENTRIC Command Alias: / ## Command Prompts: ``` Select first object: Select the first object that needs to be concentric. ``` ``` Select second object: Select an object to be concentric with the first one. ``` ## Operation Steps: 1、As shown in the figure (which is not provided here), select two circles to apply the concentric constraint. 2、The two circles will be constrained to be concentric with each other.  --- [Original help](https://www.gstarcad.net/help/GstarCAD_2027_en-US/detail/commandReferences_G/GCR_GCCONCENTRIC.html) · © Gstarsoft Co., Ltd.