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 Question from floyd: I want to build an octagon 4 feet from base of tree from 4x4's. What length do I cut my pieces

Hi Floyd,

Look at the diagram in my response to a similar question. I think you are describing a similar situation. The key here is that $s = \large \frac{d}{1 + \sqrt{2}}.$

Please write back if I have misinterpreted your question,
Penny

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