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求解🙏🏻

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✨ Jawaban Terbaik ✨

角平分線性質
BE : EC = BA : AC
BE : EC = 20 : 25 = 4 : 5
⇒ BE = 36 × 4/9 = 16 , EC = 36 × 5/9 = 20
DE = BD - BE = 18 - 16 = 2

懂了!謝謝你😊

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