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AIME 2025a Problem 2

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On △ABC\triangle ABC points AA, DD, EE, and BB lie in that order on side AB‾\overline{AB} with AD=4AD = 4, DE=16DE = 16, and EB=8EB = 8. Points AA, FF, GG, and CC lie in that order on side AC‾\overline{AC} with AF=13AF = 13, FG=52FG = 52, and GC=26GC = 26. Let MM be the reflection of DD through FF, and let NN be the reflection of GG through EE. Quadrilateral DEGFDEGF has area 288288. Find the area of heptagon AFNBCEMAFNBCEM. [asy] unitsize(14); pair A = (0, 9), B = (-6, 0), C = (12, 0), D = (5A + 2B)/7, E = (2A + 5B)/7, F = (5A + 2C)/7, G = (2A + 5C)/7, M = 2F - D, N = 2E - G; filldraw(A--F--N--B--C--E--M--cycle, lightgray); draw(A--B--C--cycle); draw(D--M); draw(N--G); dot(A); dot(B); dot(C); dot(D); dot(E); dot(F); dot(G); dot(M); dot(N); label("AA", A, dir(90)); label("BB", B, dir(225)); label("CC", C, dir(315)); label("DD", D, dir(135)); label("EE", E, dir(135)); label("FF", F, dir(45)); label("GG", G, dir(45)); label("MM", M, dir(45)); label("NN", N, dir(135)); [/asy]

Dataset text AIME 1983 to 2026. Quoted with source.

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