Rose Geometry: Tracery and Theology at Saint‑Denis

The rose is geometry teaching theology. Circles, radials, and petals organize light like doctrine. A single window becomes a cosmogram of faith.

📐 Ratios & Patterns

• Concentric rings: Frame iconographic tiers.
• Petal symmetry: Guides reading around the circle.
• Tracery thickness: Balances structure and light.

$$ ext{Petal Count} approx 12 quad Rightarrow quad ext{Apostolic cycle} $$

The circle is order made visible.