等边三角形ABC中D为BC上一点三角形DEC也是等边三角形BE,AC延长线交点与M,AD,CE的延长线交点与N求证CM=CN
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![等边三角形ABC中D为BC上一点三角形DEC也是等边三角形BE,AC延长线交点与M,AD,CE的延长线交点与N求证CM=CN](/uploads/image/z/11476677-21-7.jpg?t=%E7%AD%89%E8%BE%B9%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%ADD%E4%B8%BABC%E4%B8%8A%E4%B8%80%E7%82%B9%E4%B8%89%E8%A7%92%E5%BD%A2DEC%E4%B9%9F%E6%98%AF%E7%AD%89%E8%BE%B9%E4%B8%89%E8%A7%92%E5%BD%A2BE%2CAC%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%BA%A4%E7%82%B9%E4%B8%8EM%2CAD%2CCE%E7%9A%84%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%BA%A4%E7%82%B9%E4%B8%8EN%E6%B1%82%E8%AF%81CM%3DCN)
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