事考帮 18如图所示，四棱锥的底面为矩形，其中一条棱垂直于底面，那么该四棱锥的俯视图最有可能是。img=99407565067 Sketch Coloring Page

事考帮 18如图所示，四棱锥的底面为矩形，其中一条棱垂直于底面，那么该四棱锥的俯视图最有可能是。img=99407565067 Template

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tomski事考帮 18如图所示，四棱锥的底面为矩形，其中一条棱垂直于底面，那么该四棱锥的俯视图最有可能是。img=99407565067 coloring

事考帮 18如图所示，四棱锥的底面为矩形，其中一条棱垂直于底面，那么该四棱锥的俯视图最有可能是 。img=99407565067 sketch template

如图所示，四棱锥的底面是正方形，每条侧棱的长都是底 高途 sketch template

17． 如图所示在四棱锥P ABCD中∠ABC＝∠ACD＝90°∠BAC＝∠CAD＝60°PA⊥平面ABCDE为PD的中点PA sketch template

$如图所示四棱锥P ABCD中PA⊥平面ABCDPB与底面所成的角为$frac{π}{4}$底面ABCD为直角梯形∠ABC=∠BAD sketch template$

如图，四棱锥的底面是直角梯形，，平面是的中点，与平面交于点 sketch template

如图在四棱锥P ABCD中底面ABCD是边长为2的正方形PA=PBPA⊥PBF为CE上的点且BF⊥平面PAC．Ⅰ求证平面 sketch template

如图所示四棱锥P ABCD中底面ABCD是正方形PA⊥底面ABCDPA=AB=2点F是PB的中点点E在棱BC上移动．1当E为 sketch template

18．如图所示在四棱锥P ABCD中底面ABCD是一直角梯形∠BAD=90° AD∥BC AB = BC A AD 2a sketch template

18．如图在四棱锥P ABCD中侧面PAD⊥底面ABCD侧棱PA＝PD=底面ABCD为直角梯形 其中BC∥ADAB⊥ADAD sketch template

四棱锥图片直观图三棱锥和四棱锥图片四棱锥图片素描图片大山谷图库 sketch template

如图所示在四棱锥S ABCD中底面ABCD是正方形侧棱SD⊥平面ABCDSD=DC点E是SC的中点作EF⊥SB交SB于点F．1 sketch template

19．如图所示四棱锥P ABCD中底面ABCD为直角梯形点E在棱PA上且PE=2EA 1 求异面直线PA与CD所成的角 2 sketch template

19．如图所示四棱锥P ABCD的底面为直角梯形⊥平面E为AB中点 1求证平面⊥平面 2求直线与平面所成角的正弦值 sketch template

如图所示四棱锥P ABCD的底面ABCD为直角梯形且AD∥BCAD⊥ABE是PC的中点PA=BC=2AD=1AB=2∠PAB sketch template

事考帮 左图为给定正四面体的外表面展开图，将其折叠为正四面体后，把A面�下放在与右图完全一致的位置，然后沿箭头所示路径翻转正四面体到达问号处 sketch template

已知三棱锥的三视图如右图所示其中侧视图为直角三角形俯视图为等腰直角三角形则此三棱锥的体积等于 A． B． C． D．题目和参考 sketch template

如图所示正四棱锥P ABCD的各棱长均为13MN分别为PABD上的点且PM∶MA=BN∶ND=5∶8 1求证直线MN∥平面 sketch template

如图，在四棱锥中，底面，底面为直角梯形，，，，，，高途 sketch template

7．一个四棱锥的底面为正方形其三视图如图所示则这个四棱锥的体积是 A． B． C． D．——青夏教育精英家教�—— sketch template

（20）如图、四棱锥P ABCD中，底面ABCD为矩形，PD⊥底面ABCD，AD=PD，E、F分别为 sketch template

如图所示，底面边长为的正四棱锥被平行于其底面的平面高途 sketch template

事考帮 左图为给定正四面体的外表面展开图，将其折叠为正四面体后，把A面�下放在与右图完全一致的位置，然后沿箭头所示路径翻转正四面体到达问号处 sketch template

如图所示，四棱锥中，底面为平行四边形平面，，，，为 高途 sketch template

如图所示在四棱锥S ABCD中底面ABCD是正方形侧棱SD⊥平面ABCDSD=DC点E是SC的中点作EF⊥SB交SB于点F．1 sketch template

一个四棱锥的底面为正方形其直观图与三视图如图所示则二面角P DC A的正弦值为 ABCD——青夏教育精英家教�—— sketch template

如图所示四棱锥P ABCD的底面ABCD是边长为a的正方形侧棱PA=a PB=PD=a则它的5个面中互相垂直的面有 对——青夏教育 sketch template

如图正四棱锥S ABCD的所有棱长都相等过底面对角线 AC作平行于侧棱SB的截面交SD于E 1求AB与SC所成角的大小 2求 sketch template

19．如图所示四棱锥P ABCD的底面为直角梯形⊥平面E为AB中点 1求证平面⊥平面 2求直线与平面所成角的正弦值 sketch template

如图所示，四棱锥的底面是正方形，每条侧棱的长都是底 高途 sketch template

题目如图四棱锥的底面是矩形点为的中点与交于点Ⅰ求异面直线与所成角的余弦值Ⅱ求证Ⅲ求直线与平面所成角的正弦值 sketch template

如图，四棱锥的底面为梯形，底面，，，，为的中点．高途 sketch template

如图所示在四棱锥P ABCD中底面ABCD为菱形且∠DAB=60°PA=PDM为CD的中点BD⊥PM．1求证平面PAD⊥平面 sketch template

如图正四棱锥S ABCD的所有棱长都相等过底面对角线 AC作平行于侧棱SB的截面交SD于E 1求AB与SC所成角的大小 2求 sketch template

如图已知四棱锥S ABCD的底面是直角梯形AB∥DC∠DAB=90°SA⊥底面ABCD且SA=AD=DC=12AB=1M是SB的中点 sketch template

百度教育 sketch template

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