topic Re: Polygon Radius and Sides Defined by User Parameters? in Fusion Design, Validate & Document Forum

Fusion: Circumscribed Polygon Radius and Sides Defined by User Parameters?

emmagolson — Mon, 04 May 2026 20:38:20 GMT

this creates and inscribed polygon. is there a similar way to create a circumscribed polygon?

This post has been edited due to: @lauri_barnhart added the product to the title to help more community members find this topic. 

Re: Polygon Radius and Sides Defined by User Parameters?

skivvie — Thu, 30 Apr 2026 20:38:01 GMT

THIS. Been trying to figure this out for a while now.

Re: Polygon Radius and Sides Defined by User Parameters?

HughesTooling — Sat, 02 May 2026 07:27:09 GMT

Here's a way to create a polygon using a feature pattern rather than a sketch pattern.

First create a base body to join the pattern to.

Then extrude the triangle set to join.

Now pattern the extrude feature.

If you edit the pattern and change the amount of flats it updates as a single body.

Hope this might give users an idea how to do this in other situations and pattern types. File's attached.

Also @emmagolson sorry for late reply, this is an example of how to create a circumscribed polygon.

Re: Polygon Radius and Sides Defined by User Parameters?

jhackney1972 — Fri, 01 May 2026 22:16:52 GMT

Another Forum user show me this method, I thought I would use you model, and parameters, to show it. The secret is to create a Boundary Fill with the Join operation selected and then do a Feature Pattern of the Boundary Fill with the Compute Type set to Adjust. If the bodies touch, it will join together automatically. Thanks for the use of your model.

Re: Fusion: Circumscribed Polygon Radius and Sides Defined by User Parameters?

kacper.suchomski — Mon, 04 May 2026 21:32:10 GMT

From the process perspective, it doesn't matter whether the polygon is to be inscribed or circumscribed on a circle. It's just a matter of deciding and assigning the appropriate constraint (coincidence or tangency).

https://forums.autodesk.com/t5/fusion-design-validate-document/help-on-parametric-project/m-p/13758555#M318986