在梯形ABCD中,AD平行BC,AC为对角线,S△ADC:S△ABC=3:7,求中位线EF将梯形分成的两部分面积之比- 梯形AEFE和梯形BCFE等高怎么说明
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![在梯形ABCD中,AD平行BC,AC为对角线,S△ADC:S△ABC=3:7,求中位线EF将梯形分成的两部分面积之比- 梯形AEFE和梯形BCFE等高怎么说明](/uploads/image/z/12887249-41-9.jpg?t=%E5%9C%A8%E6%A2%AF%E5%BD%A2ABCD%E4%B8%AD%2CAD%E5%B9%B3%E8%A1%8CBC%2CAC%E4%B8%BA%E5%AF%B9%E8%A7%92%E7%BA%BF%2CS%E2%96%B3ADC%EF%BC%9AS%E2%96%B3ABC%3D3%EF%BC%9A7%2C%E6%B1%82%E4%B8%AD%E4%BD%8D%E7%BA%BFEF%E5%B0%86%E6%A2%AF%E5%BD%A2%E5%88%86%E6%88%90%E7%9A%84%E4%B8%A4%E9%83%A8%E5%88%86%E9%9D%A2%E7%A7%AF%E4%B9%8B%E6%AF%94-+%E6%A2%AF%E5%BD%A2AEFE%E5%92%8C%E6%A2%AF%E5%BD%A2BCFE%E7%AD%89%E9%AB%98%E6%80%8E%E4%B9%88%E8%AF%B4%E6%98%8E)
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