# Not able to add constraints to these circles

**URL:** <https://discourse.shapr3d.com/t/not-able-to-add-constraints-to-these-circles/15357>\
**Category:** Modeling Questions\
**Created:** [October 15, 2021, 3:10am UTC](https://discourse.shapr3d.com/t/not-able-to-add-constraints-to-these-circles/15357 "2021-10-15T03:10:54Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![DevGods](https://avatars.discourse-cdn.com/v4/letter/d/e79b87/32.png) [@DevGods](https://discourse.shapr3d.com/u/DevGods)\
**Post date:** [October 15, 2021, 3:10am UTC](https://discourse.shapr3d.com/t/not-able-to-add-constraints-to-these-circles/15357/1 "2021-10-15T03:10:54Z")

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I select these 2 circles and want to add a concentric constraint but the option doesn’t appear

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/6/6525bbb40026bd8407edf01117daf16833a15346.jpeg)

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**Author:** ![KPeter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/kpeter/32/7644_2.png) [@KPeter](https://discourse.shapr3d.com/u/KPeter)\
**Post date:** [October 15, 2021, 9:11am UTC](https://discourse.shapr3d.com/t/not-able-to-add-constraints-to-these-circles/15357/2 "2021-10-15T09:11:48Z")

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Hello! Is it possible that the two circles are not on the same plane? Please note that they can be constrained to be concentric only if both of the circles are on the same plane. You may need to project one of them to the other plane to apply concentricity.

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**Author:** ![Wendy](https://avatars.discourse-cdn.com/v4/letter/w/2bfe46/32.png) [@Wendy](https://discourse.shapr3d.com/u/Wendy)\
**Post date:** [October 23, 2021, 6:18am UTC](https://discourse.shapr3d.com/t/not-able-to-add-constraints-to-these-circles/15357/3 "2021-10-23T06:18:33Z")

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_The_ tutorial then goes on to tell you to select _the_ EQUALS _constraint_ , and then click on _the_ two 50mm _circles_.

[walgreenslistens](https://www.walgreenslistens.live/)