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abcd——青夏教育 Sketch Coloring Page

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abcd——青夏教育 Template

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sketch #3670 Bugs Bunny by Jessica Column

anonymous

anonymous
sketch #3670 Bugs Bunny by Jessica Column

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anonymous
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sketch #2937 Spongebob by Kalana Namikaze

anonymous

anonymous
sketch #2937 Spongebob by Kalana Namikaze

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anonymous

anonymous
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sketch #215 my mickey mouse

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anonymous
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anonymous
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anonymous
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anonymous

anonymous
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sketch #519 The Joker

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sketch #519 The Joker

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anonymous

anonymous
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sketch #3562 Angry by Leon Soria Ricardo

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anonymous
sketch #3562 Angry by Leon Soria Ricardo

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sketch #5288

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sketch #5094 Squirrel by Mehdi Público

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anonymous
sketch #5094 Squirrel by Mehdi Público

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anonymous

anonymous
sketch #1328

sketch #127

Johnny B. Goode
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sketch #4279 Winnie the Pooh by Douglas Dalmora

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anonymous
sketch #4279 Winnie the Pooh by Douglas Dalmora

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Fabio Sala
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sketch #4829

anonymous

anonymous
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sketch #3431 Jimi Hendrix by Konvicted Rohit

anonymous

anonymous
sketch #3431 Jimi Hendrix by Konvicted Rohit

sketch #921 comics ufo

anonymous

anonymous
sketch #921 comics ufo

sketch #33 Flutter-bys

Rachel Roe
sketch #33 Flutter-bys

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anonymous
sketch #5206

sketch #5165 Marceline by Marvin Chrome

anonymous

anonymous
sketch #5165 Marceline by Marvin Chrome

sketch #2150 batman

anonymous

anonymous
sketch #2150 batman

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anonymous
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sketch #5054 Angelina Jolie by Hailey So Pretty

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sketch #5054 Angelina Jolie by Hailey So Pretty

tomski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abcd——青夏教育 coloring

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ABCD——青夏教育 sketch template

正三棱锥的高是多� 百度经验 sketch template

初学讲义之高中数学二十：简单几何体知乎 sketch template

三棱锥图形各种截面图 千图� sketch template

三棱锥专题 Word文档在线阅读与下载免费文档 sketch template

三棱锥的三视图画法千图� sketch template

一个三棱锥的各个面均为正三角形以每个面的中心为顶点构成一个新三棱锥若新三棱锥体积为2求原三棱锥体百度知道 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

高中数学第一册上棱锥 Word文档在线阅读与下载无忧文档 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三棱锥P ABC中PA=PB=PC=AC=4AB=BC=2．1若点P在底面ABC内的射影是点O试指出点O的位置并说明理由 sketch template

如图已知四棱锥P ABCD中底面ABCD是直角梯形ABCDABC=45°DC=1AB=2PA平面ABCDPA=1 1求证 sketch template

下面有四个�题1各个侧面都是等腰三角形的棱锥是正棱锥2三条侧棱都相等的棱锥是正棱锥3底面是正三角形的棱锥是正三棱锥4 sketch template

如图，在三棱锥P ABC中，AB=BC=2√ 2，PA=PB=PC=AC=4，O为AC的中点（1）证明：PO⊥ 平面ABC；（2）若点M在棱 sketch template

11．底面边长为2的正三棱锥P ABC中E是BC的中点若 PAE的面积为则侧棱PA与底面所成角的正切值是 A．1 B． C． D．——青 sketch template

14． 三棱锥P ABC的四个顶点点在同一球面上若PA⊥底面ABC底面ABC是直角三角形PA=2 AC=BC=1则此球的表面积为 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ABCD——青夏教育 sketch template

如图，平面四边形 ，将沿折起到的位置，此时二面角的大小为 连接则三棱锥外接球的表面积为；三棱锥的体积为 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

已知正三棱柱ABC A1B1C1的底面边长为2高为4过BC作一截面截面与底面ABC成600角则截面面积是 A．4 B． C． D sketch template

如图三棱锥P ABC的底面ABC是以AC为斜边的直角三角形且顶点P在底面的射影是 ABC外心设PB=AB=1BC=2．1求证面 sketch template

如图三棱锥P ABC的三条棱PCCACB两两互相垂直并且∠PAC=30PB=BC=3 �求二面角B PA C的大小 �设点C在 sketch template

如图已知四棱锥P ABCD中底面ABCD是直角梯形ABCDABC=45°DC=1AB=2PA平面ABCDPA=1 1求证 sketch template

如图四棱锥P ABCD的底面ABCD为一直角梯形侧面PAD是等边三角形其中BA⊥ADCD⊥ADCD=2AD=2AB=2平面PAD⊥ sketch template

已知四棱锥P ABCD的底面ABCD是边长为2的正方形PD⊥底面ABCDEF分别为棱BCAD的中点．Ⅰ求证DE∥平面PFBⅡ 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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

如图已知四棱锥P ABCDPA⊥平面ABCD底面ABCD为直角梯形∠A=90°且AB//CDAB=CD 1点F在线段PC上运动 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

如图已知四棱锥P ABCDPA⊥平面ABCD底面ABCD为直角梯形∠A=90°且AB//CDAB=CD 1点F在线段PC上运动 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

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已知四棱锥的底面是边长为4的正方形在底面上的射影落在正方形内的长为到的距离分别为和 是的中点． Ⅰ求证平面底面 Ⅱ设 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

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