如图所示在棱长为3的正方体中由上到下由左到右由前到后的居中位置各钻一个洞其洞口为一正方形面积为1且洞深为3．求所得几何体的总表面积 Sketch Coloring Page

如图所示在棱长为3的正方体中由上到下由左到右由前到后的居中位置各钻一个洞其洞口为一正方形面积为1且洞深为3．求所得几何体的总表面积 Template

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sketch #1169 ENJOY IT!!!!!!!! OH NO EAT IT OR IT WILL MELT!!!!! :0

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tomski如图所示在棱长为3的正方体中由上到下由左到右由前到后的居中位置各钻一个洞其洞口为一正方形面积为1且洞深为3．求所得几何体的总表面积 coloring

如图正方体的棱长为2试建立适当的空间直角坐标系写出正方体各顶点的坐标及各边中点的坐标．题目和参考答案——青夏教育精英家教�—— sketch template

如图所示在正方体ABCD A1B1C1D1中棱长为aMN分别为A1B和AC上的点A1M=AN=则MN与平面BB1C1C的位置关系是 sketch template

有一个棱长为1米的正方体形状的木箱在顶点A处有一只壁虎在顶点C处有一只甜睡蚊子若这壁虎要在最短的时间内把蚊子抓住则壁虎在木箱表面所 sketch template

如图正方体ABCD A1B1C1D1的棱长为1P为BC的中点Q为线段CC1上的动点过点APQ的平面截该正方体所得的截面记为S则 sketch template

如图在一个棱长为20cm的正方体密闭容器的下底固定了一个实心的小长方体容器内盛有mL水时水面恰好经过小长方体的上底面。如果将容器倒置小 sketch template

如图在棱长为3的正方体ABCD A1B1C1D1中点P是平面A1BC1内一动点且满足PD PB1=2 $sqrt{13}$则 sketch template

在棱长为的正方体中，为棱的中点，点在正方体的表面上 高途 sketch template

如图所示一个棱长为5厘米的正方体分别在它的前后左右上下各面的中心挖一个横截面是边长为2厘米的正方形的长方体．求这物体的表面积 sketch template

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

如图，在棱长为的正方体中，点在平面内且，则以下结论高途 sketch template

如图在棱长为3的正方体ABCD A1B1C1D1中点P是平面A1BC1内一动点且满足PD PB1=2 $sqrt{13}$则 sketch template

如图所示在一个木制的棱长为3的正方体表面涂上颜色将它的棱三等分然后从每个等分点把正方体锯开得到27棱长为1的小正方体将这些小正方体 sketch template

如图已知正方体棱长为2点是正方形的中心点分别是棱的中点．设点分别是点在平面内的正投影． Ⅰ求以为顶点以四边形在平面内的正投影为 sketch template

本题满分12分如图在正四棱台中上底面边长为1下底面边长为3侧棱长为21求此正四棱台的侧面积2求此正四棱台的体积百度教育 sketch template

19． 如图在棱长为a的正方体中EF分别为棱AB和BC的中点EF交BD于H 1求二面角的正切值 2试在棱上找一点M使⊥ sketch template

如图9一个正方体的棱长为2cm一只蚂蚁欲从A点处沿正方体侧面到B点处吃食物那么它需要爬行的最短路径的长是 ——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

15．如图2正四面体ABCD的棱长为1H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

如图所示一个棱长为5厘米的正方体分别在它的前后左右上下各面的中心挖一个横截面是边长为2厘米的正方形的长方体．求这物体的表面积 sketch template

一个棱长为1的正方体截去一个正棱锥形状的角剩余几何体的体积最小可能是 A． B． C． D．不能确定——青夏教育精英家教�—— sketch template

已知一个多面体的直观图及三视图如图所示点在棱上截面二面角的大小为 1求证点为棱的中点 2求证 3设与的交点为求三 sketch template

如图，棱长为3的正方体的顶点A在平面α上，三条棱AB，AC，AD都在平面α的同侧，若顶点B，C到平面α的距离分别为1， 2 ，则顶点D到平面α sketch template

如图在一个棱长为20厘米的正方体密闭容器的下底固定了一个实心圆柱体容器内盛有m升水时水面恰好经过圆柱体的上底面．如果将容器倒置圆柱体有 sketch template

如图已知正三棱柱 的底面边长为2侧棱长为点E在侧棱上点F在侧棱上且 I 求证 II 求直线与平面的夹角题目和参考 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正方体棱长为2，以正方体的一个顶点为球心，以2√2为半径作球面，则该球面被正方体表面所截得的所有的弧长和为 百度教育 sketch template

正方体的棱长为1画过正方体AC1棱AA1B1C1A1B1上三个中点NLR的截面并求截面面积．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

百度教育 sketch template

18．如图所示在四棱锥P ABCD中底面ABCD是一直角梯形∠BAD=90° AD∥BC AB = BC A AD 2a sketch template

在底面半径为3高为6的圆锥内有一个内接正方体求内接正方体的棱长 百度教育 sketch template

在棱长为a的正方体ABCD A1B1C1D1中 O1O2分别为正方形AB B1A1 BCC1B1的中心则四棱锥B1 A1O1O2C1的 sketch template

16．如图棱长为3的正三棱柱内接于球O中则球O的表面积为 ——青夏教育精英家教�—— sketch template

如图是由若干个完全相同的小正方体堆成的几何体，请你画出这个几何体的三种视图． sketch template

用棱长为2厘米的小正方体如图所示层层重叠放置．则当重叠了5层时这个立方体的表面积是平方厘米．题目和参考答案——青夏教育精英家教�—— sketch template

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