老师您好,高一几何题如图在直四棱柱ABCD-A1B1C1D1中,底面ABCD为等腰梯形,AB∥CD,E,E1分别是棱AD,AA1的的中点,设F是棱AB的中点,证明:直线EE1∥平面FCC1.麻烦老师把AF∥=D1C1理由说明下 总想不透这点
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![老师您好,高一几何题如图在直四棱柱ABCD-A1B1C1D1中,底面ABCD为等腰梯形,AB∥CD,E,E1分别是棱AD,AA1的的中点,设F是棱AB的中点,证明:直线EE1∥平面FCC1.麻烦老师把AF∥=D1C1理由说明下 总想不透这点](/uploads/image/z/10241485-61-5.jpg?t=%E8%80%81%E5%B8%88%E6%82%A8%E5%A5%BD%2C%E9%AB%98%E4%B8%80%E5%87%A0%E4%BD%95%E9%A2%98%E5%A6%82%E5%9B%BE%E5%9C%A8%E7%9B%B4%E5%9B%9B%E6%A3%B1%E6%9F%B1ABCD-A1B1C1D1%E4%B8%AD%2C%E5%BA%95%E9%9D%A2ABCD%E4%B8%BA%E7%AD%89%E8%85%B0%E6%A2%AF%E5%BD%A2%2CAB%E2%88%A5CD%2CE%2CE1%E5%88%86%E5%88%AB%E6%98%AF%E6%A3%B1AD%2CAA1%E7%9A%84%E7%9A%84%E4%B8%AD%E7%82%B9%2C%E8%AE%BEF%E6%98%AF%E6%A3%B1AB%E7%9A%84%E4%B8%AD%E7%82%B9%2C%E8%AF%81%E6%98%8E%EF%BC%9A%E7%9B%B4%E7%BA%BFEE1%E2%88%A5%E5%B9%B3%E9%9D%A2FCC1.%E9%BA%BB%E7%83%A6%E8%80%81%E5%B8%88%E6%8A%8AAF%E2%88%A5%EF%BC%9DD1C1%E7%90%86%E7%94%B1%E8%AF%B4%E6%98%8E%E4%B8%8B+%E6%80%BB%E6%83%B3%E4%B8%8D%E9%80%8F%E8%BF%99%E7%82%B9)
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