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abc Sketch Coloring Page

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abc Template

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tomski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abc coloring

2．求棱长为a的正四面体外接球的半径．百度教育 sketch template

求棱长为a的正四面体的外接球与内切球的半径．题目和参考答案——青夏教育精英家教�—— sketch template

深入浅出数学系列立体几何（4）：球的切接问题（上）知乎 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ABC sketch template

任意四面体的外接球半径公式知乎 sketch template

正四面体棱切球图示千图� sketch template

3 正四面体的外接球 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ABC sketch template

专题关于球的外接与内切问题湛江贵哥讲数学博客园 sketch template

求棱长为a的正四面体的内切球、棱切球的半径 百度教育 sketch template

【高中数学�球的接切问题，快来看看吧！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

16．过正四面体外接球球心的平面截正四面体所得截面如图所示——青夏教育精英家教�—— 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

四面体外接球半径公式杂谈知乎 sketch template

有关立体几何的内切球、外接球的结论知乎 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

怎么快速求多面体外接球半径？知乎 sketch template

例4、正四面体的棱长为a，则其内切球和外接球的半径是多�体积是多�？练习：角度一直三棱柱的外接球1．2013辽宁高考已知直三棱柱 sketch template

$已知四面体P ABC的外接球的球心O在AB上且PO⊥平面ABC2AC=$sqrt{3}$AB若四面体P ABC 的体积为$frac sketch template$

已知菱形的边长为2，将沿折起，使得点至点的位置，得到四面体当二面角的大小为120°时，四面体的体积为；当四面体的体积为1时，以为球心，的长 sketch template

在棱长为a的正四面体中，相对两条棱间的距离为 百度教育 sketch template

正四面体的棱切球图片千图� sketch template

正四面体ABCD内接于半径为R的球O（即四个顶点在球面上），其内切球半径为r，（1）证明R＝3r （2）用R表百度知道 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

深入浅出数学系列立体几何（4）：球的切接问题（上）知乎 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ABC sketch template

正四面体ABCD棱长为2，E、F分别为BC、AD中点，则EF的长为 百度教育 sketch template

设四面体的各条棱长都为1若该四面体的各个顶点都在同一个球面上求该球的表面积．题目和参考答案——青夏教育精英家教�—— sketch template

已知正四面体ABCD的棱长为1求1该四面体的内切球的表面积2与该四面体各条棱均相切的球的体积3该四面体的外接球上AB两点间 sketch template

正三棱锥的高为1，底面边长为2√6，内有一个球与它的四个面都相切，求：三棱锥的表面积．内切球的半径．百度教育 sketch template

专题关于球的外接与内切问题湛江贵哥讲数学博客园 sketch template

棱长为2的正四面体的四个顶点都在同一个球面上若过该球球心的一个截面如图则图中三角形的面积是．题目和参考答案——青夏教育精英家教�—— sketch template

棱长为2的正四面体的四个顶点都在同一个球面上若过该球球心的一个截面如图1 则图中三角形的面积是 A． B． C． D．——青夏教育精英家教�—— sketch template

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