Persegi Panjang Emas

Jika 1 + r = R adalah rasio emas, maka r + r^3 + r^5 + \dots = 1.

Berikut adalah buktinya secara visual pada persegi panjang emas.

Catatan: R = 1.6180339887\dots; r = 0.6180339887\dots.

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Bandung, 16-02-2019

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