如图 在梯形abcd中,AB‖CD,AB=DC=10,AC与BC相交与G,且∠AGD=60°设E为CG的中点,F为AB的中点,求EF的长度如图 在梯形abcd中,AD‖BC,AB=DC=10,AC与BC相交与G,且∠AGD=60°设E为CG的中点,F为AB的中点,求EF的长度
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![如图 在梯形abcd中,AB‖CD,AB=DC=10,AC与BC相交与G,且∠AGD=60°设E为CG的中点,F为AB的中点,求EF的长度如图 在梯形abcd中,AD‖BC,AB=DC=10,AC与BC相交与G,且∠AGD=60°设E为CG的中点,F为AB的中点,求EF的长度](/uploads/image/z/2354427-27-7.jpg?t=%E5%A6%82%E5%9B%BE+%E5%9C%A8%E6%A2%AF%E5%BD%A2abcd%E4%B8%AD%2CAB%E2%80%96CD%2CAB%3DDC%3D10%2CAC%E4%B8%8EBC%E7%9B%B8%E4%BA%A4%E4%B8%8EG%2C%E4%B8%94%E2%88%A0AGD%3D60%C2%B0%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%E5%BA%A6%E5%A6%82%E5%9B%BE+%E5%9C%A8%E6%A2%AF%E5%BD%A2abcd%E4%B8%AD%2CAD%E2%80%96BC%2CAB%3DDC%3D10%2CAC%E4%B8%8EBC%E7%9B%B8%E4%BA%A4%E4%B8%8EG%EF%BC%8C%E4%B8%94%E2%88%A0AGD%3D60%C2%B0%E8%AE%BEE%E4%B8%BACG%E7%9A%84%E4%B8%AD%E7%82%B9%EF%BC%8CF%E4%B8%BAAB%E7%9A%84%E4%B8%AD%E7%82%B9%EF%BC%8C%E6%B1%82EF%E7%9A%84%E9%95%BF%E5%BA%A6)
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