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 Coloring Page

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�—— Template

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tomski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�—— coloring

深入浅出数学系列立体几何（3）：正四面体的性质知乎 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

深入浅出数学系列立体几何（3）：正四面体的性质知乎 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 随意优惠券 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

高中几何割补法知乎 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

怎么求与正四面体各棱相切的球 知乎 sketch template

怎么求与正四面体各棱相切的球 知乎 sketch template

已知正四面体ABCD的棱长为2，所有与它的四个顶点距离相等的平面截这个四面体所得截面的面积之和是（）A．3 3B．4C．3D．3 百度教育 sketch template

正四面体一个顶点处的立体角是多大？知乎 sketch template

高中数学立体几何学习常用公式及结论平面直线二面角 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

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

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

【高中数学�马尔�夫链（马尔可夫链）和随机游走与几何结合的相关习题知乎 sketch template

对于一个多面体来说欧拉公式是指 A顶点数 棱数面数=2 B顶点数面数 棱数=2 C棱数 顶点数=2 D不同于 sketch template

如图，正四面体的长为1，， 则． sketch template

球体与正四面体切接知乎 sketch template

在正四面体的6条棱中随机抽取2条那么其2条棱互相垂直的概率为〔〕 A B C D 百度教育 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

2．求棱长为a的正四面体外接球的半径．百度教育 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

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

正四面体 360百� 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

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

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

正四棱台的上下底面边长为2和6高为2则侧棱长为 A3 B2 C D 5 在一个倒置的——青夏教育精英家教�—— 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

如图，已知正三棱柱ABC A 1B 1C 1的所有棱长都为2，D为CC 1中点，E为BC的中点（1）求证：BD⊥ 平面AB 1E；（2）求三 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

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