How to fit a plane according to multiple points?

How to fit a plane according to multiple points?How to fit an arc according to multiple points?What plug-ins can be used?I want to use GH to implement this!

Hi,guys. I really need your help!

Then use grasshopper. Sounds like you haven’t even tried? If you have then post your code.

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Plane Fit (‘Vector | Plane | Plane Fit’)

Depending on what you want to do with the plane, you might want to relocate it with Plane Origin using the Average of the points.

3. Attach minimal versions of all the relevant files