Silver ratio
Number, approximately 2.41421
Silver ratio
In mathematics, the silver ratio is a geometrical proportion with exact value 1 + √2, the positive solution of the equation x2 = 2x + 1. The name silver ratio is by analogy with the golden ratio, the positive solution of the equation x2 = x + 1. Although its name is recent, the silver ratio (or silver mean) has been studied since ancient times because of its connections to the square root of 2, almost-isosceles Pythagorean triples, square triangular numbers, Pell numbers, the octagon, and six polyhedra with octahedral symmetry.
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