已知:如图M是等腰三角形ABC的底边BC的中点,MD垂直AB,ME垂直AC,EF垂直AB,DG垂直AC,垂足分别为D,E,F,G,DG与EF交于点N,求证:四边形DMEN是菱形(图中的N点少了)
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![已知:如图M是等腰三角形ABC的底边BC的中点,MD垂直AB,ME垂直AC,EF垂直AB,DG垂直AC,垂足分别为D,E,F,G,DG与EF交于点N,求证:四边形DMEN是菱形(图中的N点少了)](/uploads/image/z/2776710-30-0.jpg?t=%E5%B7%B2%E7%9F%A5%EF%BC%9A%E5%A6%82%E5%9B%BEM%E6%98%AF%E7%AD%89%E8%85%B0%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E7%9A%84%E5%BA%95%E8%BE%B9BC%E7%9A%84%E4%B8%AD%E7%82%B9%2CMD%E5%9E%82%E7%9B%B4AB%2CME%E5%9E%82%E7%9B%B4AC%2CEF%E5%9E%82%E7%9B%B4AB%2CDG%E5%9E%82%E7%9B%B4AC%2C%E5%9E%82%E8%B6%B3%E5%88%86%E5%88%AB%E4%B8%BAD%2CE%2CF%2CG%2CDG%E4%B8%8EEF%E4%BA%A4%E4%BA%8E%E7%82%B9N%2C%E6%B1%82%E8%AF%81%EF%BC%9A%E5%9B%9B%E8%BE%B9%E5%BD%A2DMEN%E6%98%AF%E8%8F%B1%E5%BD%A2%EF%BC%88%E5%9B%BE%E4%B8%AD%E7%9A%84N%E7%82%B9%E5%B0%91%E4%BA%86%EF%BC%89)
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