为什么正四面体顶点在底面的投影在底面三角形的中心�？ 知乎 Sketch Coloring Page

为什么正四面体顶点在底面的投影在底面三角形的中心�？ 知乎 Template

Background image: Hide Show

View Larger Image Image Credit: zhihu.com

please wait, the page is loading...

More Sketches

Take a peek at some of the sketches created by our users, are you a sketchite?

sketch #2751

Guillaume Ballieu
sketch #2751

sketch #5002 Jimi Hendrix by Piter Olimpo

anonymous

anonymous
sketch #5002 Jimi Hendrix by Piter Olimpo

sketch #5140 Jigsaw by Lajla Nygaard Laursen

anonymous

anonymous
sketch #5140 Jigsaw by Lajla Nygaard Laursen

sketch #3165

anonymous

anonymous
sketch #3165

sketch #5267

anonymous

anonymous
sketch #5267

sketch #251

Tom Kelly
sketch #251

sketch #5289

anonymous

anonymous
sketch #5289

sketch #1118 easy zombie

anonymous

anonymous
sketch #1118 easy zombie

sketch #2453 Koi Fish

anonymous

anonymous
sketch #2453 Koi Fish

sketch #2070

anonymous

anonymous
sketch #2070

sketch #4368

anonymous

anonymous
sketch #4368

sketch #1892 hmmmm........

anonymous

anonymous
sketch #1892 hmmmm........

sketch #3012 Girl by Safa M. Esam Srk

anonymous

anonymous
sketch #3012 Girl by Safa M. Esam Srk

sketch #5313 Katy Perry by Monalisa Theresia

anonymous

anonymous
sketch #5313 Katy Perry by Monalisa Theresia

sketch #20840 Dog by Laur Ūūtiis

anonymous

anonymous
sketch #20840 Dog by Laur Ūūtiis

sketch #3247 Thor by Juvenilia Alexandrino

anonymous

anonymous
sketch #3247 Thor by Juvenilia Alexandrino

sketch #1432

Laura Agapi Asnicar
sketch #1432

sketch #5083

anonymous

anonymous
sketch #5083

sketch #805

Laura Agapi Asnicar
sketch #805

sketch #3145 Madoka by Николай Герасимов

anonymous

anonymous
sketch #3145 Madoka by Николай Герасимов

sketch #3804

Laura Agapi Asnicar
sketch #3804

sketch #68509

anonymous

anonymous
sketch #68509

sketch #3667

anonymous

anonymous
sketch #3667

sketch #3058 Marilyn Monroe by Adam Pyszny

anonymous

anonymous
sketch #3058 Marilyn Monroe by Adam Pyszny

sketch #12 my bear

Tom Kelly
sketch #12 my bear

sketch #342 Forest scene

Chris Shrimp Lonsdale
sketch #342 Forest scene

sketch #2582

anonymous

anonymous
sketch #2582

sketch #2744 Burce Lee by Karim Tayyeby

Karim Tayyeby
sketch #2744 Burce Lee by Karim Tayyeby

sketch #2477 hhhh

anonymous

anonymous
sketch #2477 hhhh

sketch #1703

Laura Agapi Asnicar
sketch #1703

tomski为什么正四面体顶点在底面的投影在底面三角形的中心�？ 知乎 coloring

为什么正四面体顶点在底面的投影在底面三角形的中心�？ 知乎 sketch template

百度教育 sketch template

为什么正四面体顶点在底面的投影在底面三角形的中心�？ 知乎 sketch template

深入浅出数学系列立体几何（3）：正四面体的性质 知乎 sketch template

深入浅出数学系列立体几何（3）：正四面体的性质 知乎 sketch template

深入浅出数学系列立体几何（3）：正四面体的性质 知乎 sketch template

深入浅出数学系列立体几何（3）：正四面体的性质 知乎 sketch template

高中数学：几何体表面积与体积的教学设计 知乎 sketch template

正四面体的中心到底面的距离与这四面体的高的比是（）A12B13C14D16 百度教育 sketch template

15．如图2正四面体ABCD的棱长为1H是顶点D的底面 ABC上的射影M在DH上且使得∠ABC=90°则DM的长 为 ——青夏教育 sketch template

一个正四面体的各条棱长都是a那么这个正四面体的高百度经验 sketch template

分子点群的归属（2）对称性高的点群化学空间 Chem Station sketch template

正四面体一个顶点处的立体角是多大？ 知乎 sketch template

81半径为 R 的圆球堆积成正四面体空隙，试作图计算该正四面体的边长、高、体心到顶点的距离、中心距底面的高度、中心到两顶点连线的夹角以及 sketch template

正四面体一个顶点处的立体角是多大？ 知乎 sketch template

多面正投影图轴侧投影图伤感说说吧 sketch template

15．如图2正四面体ABCD的棱长为1H是顶点D的底面 ABC上的射影M在DH上且使得∠ABC=90°则DM的长 为 ——青夏教育 sketch template

第十四章立体几何初步 知乎 sketch template

百度教育 sketch template

正多面体有且只有5种，为什么？ 正多面体为什么只有5种 CSDN博客 sketch template

从正八面体，构建：正四面体，正方体，正二十面体 sketch template

正四面体ABCD的棱长为1G是底面 ABC的中心M在线段DG上且使∠AMB=90°则GM的长等于 A B C D——青夏 sketch template

Z Math【高中数学�8——正方体的截面形状探究 知乎 sketch template

正四面体 360百� sketch template

7．如图正四面体的棱长均为且平面于A点BCD均在平面外且在平面同一侧则点B到平面的距离是 A． B． C． D．——青夏教育精英 sketch template

初学讲义之高中数学二十：简单几何体 知乎 sketch template

两相同的正四棱锥组成如图所示的几何体可放棱长为1的正方体内使正四棱锥的底面ABCD与正方体的某一个平面平行且各顶点均在正方体的面上则 sketch template

求棱长为a的正四面体的外接球和内切球的半径解析如图作AH⊥底面BCD于H则AH＝a设内切球的球心为O半径为rO点与ABC sketch template

正三棱锥 知乎 sketch template

怎样补全平面图形投影？ 知乎 sketch template

10．已知正四面体点为侧面内的一个动点且点与顶点的距离等于点到底面的距离那么动点的轨迹是某曲线的一部分则该曲线是椭圆抛物线第Ⅱ卷 sketch template

16．若棱长为1的正八面体的六个顶点均在某个球的球面上则这个球的体积为 ——青夏教育精英家教�—— sketch template

正四棱锥的顶点都在同一球面上若该棱锥的高为4底面边长为2则该球的表面积为A．B．C．D．题目和参考答案——青夏教育精英家教�—— 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

已知正四面体ABCD及其内切球O经过该四面体的棱AD及底面ABC上的高DH作截面交BC于点E则截面图形正确的是 B sketch template

free web stats