The red diagonal connects vertices 3 apart (skipping 2). The green side is one edge. Their ratio is exactly 1 + √2 ≈ 2.414, the silver ratio. This is the octagon equivalent of the golden ratio diagonal in a pentagon.
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A-paper series: fold in half, keep the same proportions
A0, A1, A2… each sheet is half the previous. The ratio 1:√2 is the only ratio that survives halving. Fold a 1:√2 sheet: you get a √2:1 sheet, the same proportions rotated. √2 = δₛ - 1, linking the paper series directly to the silver ratio.
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Question
Barisan apa yang memiliki rasio perak sebagai rasio limitnya?