# Rectangle shrinks symmetrically, expands to a side

**URL:** <https://discourse.shapr3d.com/t/rectangle-shrinks-symmetrically-expands-to-a-side/37003>\
**Category:** Modeling Questions\
**Created:** [March 13, 2025, 3:27am UTC](https://discourse.shapr3d.com/t/rectangle-shrinks-symmetrically-expands-to-a-side/37003 "2025-03-13T03:27:38Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![mstas227](https://avatars.discourse-cdn.com/v4/letter/m/b487fb/32.png) [@mstas227](https://discourse.shapr3d.com/u/mstas227)\
**Post date:** [March 13, 2025, 3:27am UTC](https://discourse.shapr3d.com/t/rectangle-shrinks-symmetrically-expands-to-a-side/37003/1 "2025-03-13T03:27:38Z")

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As you can see here, two consecutive similar actions result in different behaviour. Moreover, changing width in the lower rectangle works correct. Both rectangles are copies. Is there some basic knowledge or steps I am missing here?

Sorry, cannot upload video, but basically it shows that when you first reduce size of the width of the upper rectangle from 800 to 650, it shrinks simmetrically to the origin. Then when you make it 800 again, it will expand only to the right side, assymetrically to the origin.

 ![Screenshot 2025-03-13 at 05.25.50](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/6/9/69eb572b557bc07a23533ab3088b3aeb52f859e1.jpeg)

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**Author:** ![SCALEMODEL](https://avatars.discourse-cdn.com/v4/letter/s/77aa72/32.png) [@SCALEMODEL](https://discourse.shapr3d.com/u/SCALEMODEL)\
**Post date:** [March 13, 2025, 9:41am UTC](https://discourse.shapr3d.com/t/rectangle-shrinks-symmetrically-expands-to-a-side/37003/2 "2025-03-13T09:41:24Z")

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You can simplify your constraint and not use construction line. Just use symmetry constraints on your 4 rectangle, I believe that would also accomplish what you are looking to do.

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**Author:** ![mstas227](https://avatars.discourse-cdn.com/v4/letter/m/b487fb/32.png) [@mstas227](https://discourse.shapr3d.com/u/mstas227)\
**Post date:** [March 16, 2025, 5:24am UTC](https://discourse.shapr3d.com/t/rectangle-shrinks-symmetrically-expands-to-a-side/37003/3 "2025-03-16T05:24:10Z")

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Yes, I will use Symmetry next time and it will work for sure. Thank you!