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如图ABCD—A1B1C1D1是正四棱柱 如图,正四棱柱
(2014?安徽)如图,四棱柱ABCD-A (Ⅰ)证明:∵四棱柱ABCD-A1B1C1D1中,四边形ABCD为梯形,AD∥BC,平面QBC∥平面A1D1DA,平面A1CD与面QBC、平面A1D1DA的交线平行,∴QC∥A1DQBC∽△A1A...
(2014?安徽)如图,四棱柱ABCD-A (Ⅰ)证明:∵四棱柱ABCD-A1B1C1D1中,四边形ABCD为梯形,AD∥BC,平面QBC∥平面A1D1DA,平面A1CD与面QBC、平面A1D1DA的交线平行,∴QC∥A1DQBC∽△A1A...