Golden triangle (mathematics)

Common card · No. 494750

A golden triangle, also called a sublime triangle, is an isosceles triangle in which the duplicated side is in the golden ratio φ {\displaystyle \varphi } to the base side: a b = φ = 1 + 5 2 ≈ 1.618 034. {\displaystyle {a \over b}=\varphi ={1+{\sqrt {5}} \over 2}\approx 1.618~034.}