2025AIME2 P6--Random Divisor Subset of 2025: LCM Probability

 2025AIME2 P5--Two Tangent Circles & Equal Areas: Area of Inscribed Rectangle EFGH

 2025AIME2 P4--84°–60°–36° Triangle + Midpoint Triangle: Arc-Length Combo

 2025AIME2 P3--Log Telescoping Product: Simplify the Chain of Bases

 2025AIME2 P2--Divisibility Puzzle: Sum of n with (n+2) | 3(n+3)(n²+9)

 2025AIME2 P1-Six Collinear, One Off-Line: Area of △BGE (Geometry/Coordinates)

 2019AMC12A P25 SOL2--Angle Iteration Map & Invariant Linearization