Sunday, January 11, 2026

2021 AIME 1 reflection notes from H

AIME — Reflection Notes from H

Did 8 to 15 Incorrect / wrong: #9, #13, #15

Need Review / Unclear:

#9 – Not able to use similar triangles.
#13 – Totally confused; I tried PUP.
#15 – Not sure how to solve a quartic equation (x4).

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