Logarithmic Spiral, Golden Triangle, Golden Gnomon, Spira Mirabilis

cults3d

Logarithmic Spiral, Golden Triangle, Golden Gnomon, Spira Mirabilis A golden triangle is a specially designed triangle where the two longer sides and the short side are in perfect harmony with the golden ratio ϕ = (sqrt(5)+1)/2, and the three interior angles precisely measure 72°, 72°, and 36°. By starting from this unique triangle, you can create an infinite number of identical golden triangles moving either inward or outward, resulting in a stunning logarithmic spiral. To showcase these remarkable geometric relationships, I have carefully included the triangles for kids to explore and appreciate. Eight different sizes are available, with each size referring to the length of the short side of the outermost triangle. The spirals are an impressive 8mm wide and 2mm thick, while the smaller ones have a slightly thinner build.