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TR-MO-R1 2014 Problem 1

    Dışbükey bir ABCDABCD dörtgeninde m(DAB^)=m(CBD^)=120°m(\widehat{DAB}) = m(\widehat{CBD}) = 120°, ∣AB∣=2|AB| = 2, ∣AD∣=4|AD| = 4 ve ∣BC∣=∣BD∣|BC| = |BD| dir. CC noktasından geçen ve ABAB ye paralel olan doğru ADAD doğrusunu EE noktasında kesiyor ise, ∣CE∣|CE| nedir?

    a) 88 b) 77 c) 66 d) 55 e) Hiçbiri

    Official text Turkish Mathematical Olympiad, first round 2014 official paper, page 2. Quoted with source.

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