Golden Geometry — A Guided Path
Everything here is built in golden space: every coordinate is an exact golden number, and every tile is a golden triangle. Work through the lessons in order — each one builds the tool the next one needs.
- PhiBase — Exact Arithmetic — the number system
p·φ + n: add, multiply, exact division, and the lattice-membership test. - The Fibonacci Spine — powers of φ as exact integer pairs; multiply by adding indices.
- Six-basis ↔ Cartesian — six golden directions instead of three, mapped exactly both ways.
- Exact Reflections — folding space; reflected points land in
⅕Z[φ], exactly. - The 15 Mirror Planes — why the six face axes don’t close, and the fifteen that generate
Ih. - The Nearest-Neighbour Star — every neighbour reached by translation; nothing missed.
- The Golden-Triangle Hull — placing the next golden triangle or gnomon, exactly.
Each lesson has a live, interactive panel running the real geometry code — so the numbers you see are the same ones the engine builds with.