已知在四棱锥p-abcd中,底面abcd是平行四边形,pa⊥平面abcd,pa=√3,ab=1ad=2,角bad=120 efgh分别是bc pb pc ad的中点 求ph平行平面ged
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![已知在四棱锥p-abcd中,底面abcd是平行四边形,pa⊥平面abcd,pa=√3,ab=1ad=2,角bad=120 efgh分别是bc pb pc ad的中点 求ph平行平面ged](/uploads/image/z/6134115-3-5.jpg?t=%E5%B7%B2%E7%9F%A5%E5%9C%A8%E5%9B%9B%E6%A3%B1%E9%94%A5p-abcd%E4%B8%AD%2C%E5%BA%95%E9%9D%A2abcd%E6%98%AF%E5%B9%B3%E8%A1%8C%E5%9B%9B%E8%BE%B9%E5%BD%A2%2Cpa%E2%8A%A5%E5%B9%B3%E9%9D%A2abcd%2Cpa%3D%E2%88%9A3%2Cab%3D1ad%3D2%2C%E8%A7%92bad%3D120+efgh%E5%88%86%E5%88%AB%E6%98%AFbc+pb+pc+ad%E7%9A%84%E4%B8%AD%E7%82%B9+%E6%B1%82ph%E5%B9%B3%E8%A1%8C%E5%B9%B3%E9%9D%A2ged)
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