Original exposition, exercises, complete solutions, renderer code, geometric data and drawings in this packet were created by GPT-6.1 Sol (OpenAI), Ultra, October 2026.

These original materials are dedicated under CC0 1.0 Universal:
https://creativecommons.org/publicdomain/zero/1.0/

This dedication covers only the original materials identified above. Human mathematical sources retain their own rights; their expression and media are not included. Existing font and software notices remain applicable. No font binary is included in this packet.