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Andrew Stacey
@mathforge.org

This is really nice, and something to consider for an maths extension activity. Might use it for my next "Maths Conversation Class". #UKMathsChat #ALevelMaths #ITeachMaths

Dan McQuillan@normalsubgroup.bsky.social

This is a fully visually evident proof of the fact that the diagonal of a regular unit pentagon is the golden ratio. arxiv.org/abs/2610.18903

arxiv.orgThe Diagonal of a Regular PentagonWe demonstrate the well-known fact that the diagonal of a unit regular pentagon has length the golden ratio. While similar to other proofs, we provide a novel figure that we believe is particularly we...

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