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

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

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

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

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

深入浅出数学系列立体几何（4）：球的切接问题（上）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

正四面体 中心到顶点距离为a，求四个顶点坐标百度知道 sketch template

已知任意一个四面体的六条棱长，如何求出其体积？知乎 sketch template

任意四面体的外接球半径公式知乎 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

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

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

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

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

初学讲义之高中数学二十：简单几何体知乎 sketch template

3 正四面体的外接球 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

球体与正四面体切接知乎 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$

深入浅出数学系列立体几何（4）：球的切接问题（上）知乎 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

有关立体几何的内切球、外接球的结论知乎 sketch template

两个相同的正四棱锥底面重合组成一个八面体可放于棱长为1的正方体中重合的底面与正方体的某一个面平行各顶点均在正方体的表面上把满足上述条件 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

怎么快速求多面体外接球半径？知乎 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

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

正四棱锥的顶点都在同一球面上若该棱锥的高为6底面边长为4则该球的表面积为 A443πB4849πC814πD16π 题目和 sketch template

正六棱柱底面是正六边形侧棱垂直底面ABCDEF A1B1C1D1E1F1的各棱长均为1求1正六棱柱的表面积2一动点从A沿 sketch template

正四面体 360百� sketch template

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专题关于球的外接与内切问题贵哥讲高中数学博客园 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

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