四棱锥底面ABCD为棱形边长为1,∠DAB=60°,PA=PD=根号2,PB=2,E,F,G为BC,PC,AD的中点,求求三棱锥P-ABD的体积你作高po为什么一定交BG的延长线于点O?
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![四棱锥底面ABCD为棱形边长为1,∠DAB=60°,PA=PD=根号2,PB=2,E,F,G为BC,PC,AD的中点,求求三棱锥P-ABD的体积你作高po为什么一定交BG的延长线于点O?](/uploads/image/z/3729514-58-4.jpg?t=%E5%9B%9B%E6%A3%B1%E9%94%A5%E5%BA%95%E9%9D%A2ABCD%E4%B8%BA%E6%A3%B1%E5%BD%A2%E8%BE%B9%E9%95%BF%E4%B8%BA1%2C%E2%88%A0DAB%3D60%C2%B0%2CPA%3DPD%3D%E6%A0%B9%E5%8F%B72%2CPB%3D2%2CE%2CF%2CG%E4%B8%BABC%2CPC%2CAD%E7%9A%84%E4%B8%AD%E7%82%B9%2C%E6%B1%82%E6%B1%82%E4%B8%89%E6%A3%B1%E9%94%A5P-ABD%E7%9A%84%E4%BD%93%E7%A7%AF%E4%BD%A0%E4%BD%9C%E9%AB%98po%E4%B8%BA%E4%BB%80%E4%B9%88%E4%B8%80%E5%AE%9A%E4%BA%A4BG%E7%9A%84%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%BA%8E%E7%82%B9O%EF%BC%9F)
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