有一道梯形的几何体我不会做,如图所示,已知在四边形ABCD中,AD平行BC,AB=DC=10cm,AC与BD相交于点G,且∠AGD=60°,设E为CG的中点,F为AB的中点,求EF的长.
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/30 02:19:16
![有一道梯形的几何体我不会做,如图所示,已知在四边形ABCD中,AD平行BC,AB=DC=10cm,AC与BD相交于点G,且∠AGD=60°,设E为CG的中点,F为AB的中点,求EF的长.](/uploads/image/z/14331792-48-2.jpg?t=%E6%9C%89%E4%B8%80%E9%81%93%E6%A2%AF%E5%BD%A2%E7%9A%84%E5%87%A0%E4%BD%95%E4%BD%93%E6%88%91%E4%B8%8D%E4%BC%9A%E5%81%9A%2C%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E5%B7%B2%E7%9F%A5%E5%9C%A8%E5%9B%9B%E8%BE%B9%E5%BD%A2ABCD%E4%B8%AD%2CAD%E5%B9%B3%E8%A1%8CBC%2CAB%3DDC%3D10cm%2CAC%E4%B8%8EBD%E7%9B%B8%E4%BA%A4%E4%BA%8E%E7%82%B9G%2C%E4%B8%94%E2%88%A0AGD%3D60%C2%B0%2C%E8%AE%BEE%E4%B8%BACG%E7%9A%84%E4%B8%AD%E7%82%B9%2CF%E4%B8%BAAB%E7%9A%84%E4%B8%AD%E7%82%B9%2C%E6%B1%82EF%E7%9A%84%E9%95%BF.)
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