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TR-MO-R1 2014 Problem 29

    ∣AB∣=13|AB| = 13, ∣BC∣=12|BC| = 12 ve ∣CA∣=5|CA| = 5 olan bir ABCABC üçgeninin AA ve BB köşelerine ait iç açıortaylar II noktasında kesişiyor ve karşı kenarları da sırasıyla, DD ve EE noktalarında kesiyor. [DE][DE] nin orta noktasından ve II dan geçen doğru [AB][AB] yi FF noktasında kesiyor ise, ∣AF∣|AF| nedir?

    a) 32\dfrac{3}{2} b) 22 c) 52\dfrac{5}{2} d) 33 e) 72\dfrac{7}{2}

    Official text Turkish Mathematical Olympiad, first round 2014 official paper, page 9. Quoted with source.

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