Tiling
Triangles: 0
Kite/dart ratio: φ
Kite/dart ratio: φ
Deflation: each triangle splits into smaller ones following golden ratio rules. The ratio of kite:dart tiles = φ = (1+√5)/2 ≈ 1.618. Never periodic!
P2 Penrose tiling via deflation substitution. Aperiodic — no translational symmetry, but perfect 5-fold rotational symmetry.