在四棱台abcd a1b1c1d1中上下底面均为正方形则dd1与bb1所在直线是 A．相交直线 B．平行直线 C 不垂直的异面 Sketch Coloring Page

在四棱台abcd a1b1c1d1中上下底面均为正方形则dd1与bb1所在直线是 A．相交直线 B．平行直线 C 不垂直的异面 Template

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tomski在四棱台abcd a1b1c1d1中上下底面均为正方形则dd1与bb1所在直线是 a．相交直线 coloring

本题满分12分如图在正四棱台中上底面边长为1下底面边长为3侧棱长为21求此正四棱台的侧面积2求此正四棱台的体积百度教育 sketch template

四棱台 千图� sketch template

四棱台立体图千图� sketch template

四棱台 千图� sketch template

在四棱台ABCD A1B1C1D1中上下底面均为正方形则DD1与BB1所在直线是 A．相交直线 B．平行直线 C 不垂直的异面 sketch template

正四棱台 搜狗百� sketch template

如图在正四棱台ABCD A1B1C1D1中A1B1=aAB=2a$A{A 1}=sqrt{2}a$EF分别是ADAB的中点 sketch template

百度教育 sketch template

已知四棱台ABCD A1B1C1D1的上下底面分别是边长为2和4的正方形AA1=4且AA1⊥底面ABCD点P为DD1的中点．I求证 sketch template

已知正四棱台的上底面边长为，侧棱长为，高为，则．高途 sketch template

正四棱台的上下底面边长为2和6高为2则侧棱长为 A3 B2 C D 5 在一个倒置的——青夏教育精英家教�—— sketch template

如图在直四棱柱ABCD A1B1C1D1中底面ABCD为等腰梯形AB∥CDAB=4BC=CD=2AA1=2EE1F分别是棱 sketch template

如图在四棱柱ABCD A1B1C1D1中底面ABCD和侧面BCC1B1都是矩形E是CD的中点D1E⊥CDAB=2BC=2．Ⅰ求证 sketch template

四棱台 千图� sketch template

如图已知直四棱柱ABCD A1B1C1D1的底面边长和侧棱长均为1且满足∠BAD=60°O1为A1C1的中点．1求证BD⊥A1C sketch template

如图在四棱柱ABCD A1B1C1D1中底面ABCD和侧面BCC1B1都是矩形E是CD的中点D1E⊥CDAB=2BC=2．Ⅰ求证 sketch template

14= 15如图四棱柱ABCD―A1B1C1D1的底面ABCD为正方形侧棱与底面边长均为2a——青夏教育精英家教�—— sketch template

如图所示在正方体ABCD A1B1C1D1中棱长为aMN分别为A1B和AC上的点A1M=AN=则MN与平面BB1C1C的位置关系是 sketch template

在直四棱柱ABCD A1B1C1D1中已知AB∥CDAB=AD=1D1D=CD=2AB⊥AD．I求证BC⊥面D1DBII求 sketch template

8．如图，在四棱锥P－ABCD中，PA⊥平面ABCD，底面ABCD为菱形，E为CD的中点1求证：BD⊥平面PAC；2若∠ABC＝60 sketch template

棱台图片（高清15张）高清图片大全 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ABCDSD=DC点E是SC的中点作EF⊥SB交SB于点F．1 sketch template

如图，在四棱锥P ABCD中，底面ABCD是边长为1的正方形，PA⊥底面ABCD，点M是棱PC的中点，AM⊥平面PBD．（1）求四棱锥P sketch template

如图在正四棱柱ABCD A1B1C1D1中已知AA1=2AB且点P为DD1的中点．1求证直线BD1∥平面PAC2求证平面 sketch template

棱柱、棱锥和棱台作业高中数学必修二苏教版含答案 Word文档在线阅读与下载免费文档 sketch template

12．如图所示在四棱锥P ABCD中底面ABCD是矩形PA＝AB＝2BC＝a又侧棱PA⊥底面ABCD 1当a为何值时BD⊥ 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，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

画出正四棱台的三视图．题目和参考答案——青夏教育精英家教�—— sketch template

81 基本立体图形1 棱柱、棱锥、棱台 湛江贵哥讲数学博客园 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

棱台直观图直观图与原图正三棱柱直观图大山谷图库 sketch template

四棱台 360百� sketch template

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