如图，已知六棱锥的底面是正六边形，则下列结论正确的是 a． B． C．直线∥ D．直线所成的角为45°——青夏教育精英家教�—— Sketch Coloring Page

如图，已知六棱锥的底面是正六边形，则下列结论正确的是 a． B． C．直线∥ D．直线所成的角为45°——青夏教育精英家教�—— Template

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anonymous

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sketch #5179 Audrey Hepburn by 陳一夫

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sketch #5063 Super Meat Boy by Alexander Volodimirovich Danilchenko

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anonymous
sketch #5063 Super Meat Boy by Alexander Volodimirovich Danilchenko

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anonymous

anonymous
sketch #2950 Miss Fortune from League of Legends by Araceli GM

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anonymous

anonymous
sketch #4653 Kero by Indike Liyanage

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anonymous

anonymous
sketch #3365 Igor by Johan Kennet Espinoza Moreno

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anonymous

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sketch #2977 Spongebob Germaine Hoens

sketch #2772 Merry Christmas from Victor Montecinos Jose Rondon

Jose Rondon
sketch #2772 Merry Christmas from Victor Montecinos Jose Rondon

sketch #3939

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tomski如图，已知六棱锥的底面是正六边形，则下列结论正确的是 a． b． coloring

已知六棱锥P ABCDEF其中底面ABCDEF是正六边形点P在底面的投影是正六边形的中心底面边长为2cm侧棱长为3cm求六棱锥P sketch template

如图，已知六棱锥的底面是正六边形，则下列结论正确的是 A． B． C．直线∥ D．直线所成的角为45°——青夏教育精英家教�—— 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

正六棱锥图片直观图正六棱锥直观图正六棱锥直观图怎么画第4页大山谷图库 sketch template

sketch template

有一个正六棱锥底面为正六边形侧面为全等的等腰三角形的棱锥底面边长为3cm高为3cm画出这个正六棱锥的直观图．题目和参考答案——青 sketch template

如图已知六棱锥的底面是正六边形平面 则下列结论正确的是 直线∥平面平面平面直线与平面所成的角为——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

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如图正三棱锥V ABC的底面边长为a侧棱与底面所成的角等于θ过底面一边作棱锥的截面当截面与底面所成二面角为何值时截面面积最小并求出 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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

20．（12分）如图，四棱锥P ABCD的底面为正方形，PD⊥底面ABCD．设平面PAD与平面PBC的交线为l．（1）证明：l⊥平面PDC sketch template

如图在四棱锥P—ABCD中PA⊥底面ABCDAB⊥ADAC⊥CD∠ABC=60°PA=AB=BCE是PC的中点1证明AE 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

2．如图正三棱锥P ABC顶点P在底面上的射影在ΔABC内部M是侧面PAB上的点且M到点P的距离等于M到底面的距离则点M的轨迹是 sketch template

19． 如图在五棱锥S ABCDE中SA⊥底面ABCDE SA=AB=AE=2BC=DE=∠BAE=∠BCD=∠CDE=120 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

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 ABCD——青夏教育精英家教�—— sketch template

19． 如图四棱锥E ABCD中底面ABCD为正方形EC⊥平面ABCDAB=CE=1G为AC与BD交点F为EG中点 Ⅰ求证 sketch template

已知正四棱锥底面正方形的边长为4cm高与斜面的夹角为30°如图所示求正四棱锥的侧面积和表面积单位cm2．题目和参考答案——青夏 sketch template

如图已知四棱锥S ABCD的侧面SCD⊥底面ABCDBC∥ADBC⊥SC且SC=SD=CD=BC=2AD =2P为SB的中点求 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在三棱柱ABC A1B1C1中侧面AA1C1C⊥底面ABCAA1=A1C=AC=2AB=BCAB⊥BCO为AC的中点1 sketch template

5．已知三棱锥S ABC的底面是正三角形点A在侧面SBC上的射影H是 SBC的垂心SA=a则此三棱锥体积最大值是 A． B C D sketch template

如图四棱锥P ABCD中底面四边形ABCD是正方形侧面PDC是边长为a的正三角形且平面PDC⊥底面ABCDE为PC的中点 ——青夏 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

11．如图四棱锥P ABCD的底面ABCD是边长为2的正方形侧面PAB是正三角形且与底面垂直E为PD中点过直线BC和点E的平面与侧棱 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

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底面ABCD是矩形PD⊥平面ABCD且PD=AD=1AB=2点E是AB上一点AE等于何值时二面角P sketch template

已知四棱锥P ABCD它的底面是边长为a的菱形且∠ABC＝120°PC⊥平面ABCD又PC＝aE为PA的中点． 1求证平面 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

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