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How to construct a perfect regular pentagon. No numbers. No protractor. Just a straight edge and a compass.

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Abakcus

85,865 subscribers

10,467 次观看 • 11 个月前 •via X (Twitter)

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PhreddySmith 的头像
PhreddySmith11 个月前

Now do it for 17. Gauss did.

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Tiago Hands11 个月前

Abstract algebra: Rings covered in detail. Personalised notes. #rings

Tivadar Danka 的头像
Tivadar Danka11 个月前

How much of what you do is art?

Matilda Spicer 的头像
Matilda Spicer11 个月前

July 9, 1911 — John Archibald Wheeler was born. A visionary physicist, he coined terms like “black hole” and “wormhole,” and helped shape quantum theory and relativity. Mentor to Feynman, he bridged science and philosophy. 🌀🌌 #OnThisDay #Physics #Wheeler

Abakcus 的头像
Abakcus11 个月前

The geometry behind parallel parking.

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