6．如图在底面为直角梯形的四棱锥 abcdbc=6 Ⅰ求证 Ⅱ求二面角的平面角的余弦值解Ⅰ如图建立坐标系则 Sketch Coloring Page

6．如图在底面为直角梯形的四棱锥 abcdbc=6 Ⅰ求证 Ⅱ求二面角的平面角的余弦值解Ⅰ如图建立坐标系则 Template

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tomski6．如图在底面为直角梯形的四棱锥 abcdbc=6 Ⅰ求证 coloring

如图，在直四棱柱中，底面为直角梯形，，，，为上一点高途 sketch template

如图已知四棱锥P ABCD中底面ABCD是直角梯形ABCDABC=45°DC=1AB=2PA平面ABCDPA=1 1求证 sketch template

如图在四棱锥P ABCD中底面ABCD为直角梯形AD∥BC∠ADC=90°平面PAD⊥底面ABCDQ为AD的中点PA=PD=2 sketch template

如图，在四棱锥P ABCD中，侧面PAD⊥ 底面ABCD，侧棱PA=PD=√2，底面ABCD为直角梯形，其中BC//AD，AB⊥ AD，AD sketch template

直角梯形有几个直角 百度经验 sketch template

6．如图在底面为直角梯形的四棱锥 ABCDBC=6 Ⅰ求证 Ⅱ求二面角的平面角的余弦值解Ⅰ如图建立坐标系则 sketch template

如图，在直四棱柱中，底面为梯形，，，其中，，，是的高途 sketch template

如图在四棱锥P ABCD中底面ABCD为直角梯形AB∥CD∠DAB=60°AB=AD=2CD且三角形PAD为等腰 PA=PD sketch template

6．如图在底面为直角梯形的四棱锥 ABCDBC=6 Ⅰ求证 Ⅱ求二面角的平面角的余弦值解Ⅰ如图建立坐标系则 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

已知四棱锥如图5 1所示，其三视图如图5 2所示，其中正视图和侧视图都是直角三角形，俯视图是矩形 1求此四棱锥的体积； 2若E是PD sketch template

20．如图在四棱锥p ABCD中底面ABCD是一直角梯形∠BAD=90°AD∥BCAB=BC=aAD=2a且PA⊥底面ABCD sketch template

如图已知四棱锥P ABCD的底面为直角梯形AB∥CD∠DAB=90°PA⊥底面ABCD且PA=AD=DC=12AB=1M是PB的 sketch template

三棱锥图片直观图 千图� sketch template

如图已知四棱锥P ABCDPA⊥平面ABCD底面ABCD为直角梯形∠A=90°且AB//CDAB=CD 1点F在线段PC上运动 sketch template

如图在四棱锥P ABCD中PA⊥底面ABCD且底面ABCD为直角梯形AB∥CD∠BAD=90°PA=AD=AB=1CD=2E为 sketch template

如图，在四棱锥中，底面是梯形，，侧面是等边三角形，侧面是等腰直角三角形， 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

如图已知四棱锥P ABCDPA⊥平面ABCD底面ABCD为直角梯形∠A=90°且AB//CDAB=CD 1点F在线段PC上运动 sketch template

已知四棱锥P ABCD的底面为直角梯形AB∥DC∠DAB=90°PA⊥底面ABCD且PA=AD=DC=12AB=1．Ⅰ证明面 sketch template

如图已知三棱锥的底面是直角三角形直角边长分别为3和4过直角顶点的侧棱长为4且垂直于底面该三棱锥的主视图是ABCD——青夏教育 sketch template

已知正三棱锥P－ABC的底面边长为6，其内切球的半径为1，则此三棱锥的高为． 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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在底面是直角梯形的四棱锥S ABCD中面ABCD SA=AB=BC=1AD= Ⅰ求四棱锥S ABCD的体积 Ⅱ求面SCD sketch template

如图在底面是菱形的四棱锥 P ABCD中∠ABC=60°PA⊥平面ABCD点EFG分别为CDPDPB的中点．PA=AD=2 sketch template

已知正六棱锥底面边长为4高为3求它的侧棱长．题目和参考答案——青夏教育精英家教�—— sketch template

如图在四棱锥P ABCD中侧面底面ABCD底面ABCD是菱形侧面PAD是等边三角形且PB与面PAD所成角为1求四棱锥P sketch template

题目中将底面为长方形且有一条侧棱与底面垂直的四棱锥称之为阳马将四个面都为直角三角形的四面体称之为鳖�．在如图所示的阳马P﹣ABCD中 sketch template

2014高考数学理一轮：一课双测A B精练四十八空间�量与空间角 Word文档在线阅读与下载无忧文档 sketch template

如图，在四棱锥P ABCD中，底面ABCD是平行四边形，∠BCD=120°，侧面PAB⊥底面ABCD，PB=2√6，AB=AC=PA=2√3 sketch template

如图在四棱锥P ABCD中底面ABCD是正方形侧面PAD⊥底面ABCD且PA=PD=AD=2EF分别为PCBD的中点．Ⅰ sketch template

如图，在平行六面体ABCD A 1B 1C 1D 1中，底面是边长为2的正方形，若∠ 1AB=∠ 1AD=60^° ，且A 1A 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

侧面是全等的等腰三角形的棱锥是 A．正棱锥 B．侧棱长相等的棱锥 C．斜高长相等的棱锥 D．以上均不对——青夏教育精英家教�—— sketch template

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