名校
解题方法
1 . 如图,在三棱锥
中,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/68e3da10-b124-4ae1-96ab-6ef6e16e68d1.png?resizew=243)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/f5b1547a-91e7-45b6-9374-0e6c724a5534.png?resizew=276)
(1)根据图中所给主视方向,在下列方格纸(方格的单位长度为1)上已画出该三棱锥的主视图,请画出该三棱锥的左视图和俯视图;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5ae8a050d7159d4296c2409e5bc0bf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f7898f562dffdf08263bfb0873e0691.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/364d6c88726d8c3bb8ed297057332bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/68e3da10-b124-4ae1-96ab-6ef6e16e68d1.png?resizew=243)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/f5b1547a-91e7-45b6-9374-0e6c724a5534.png?resizew=276)
(1)根据图中所给主视方向,在下列方格纸(方格的单位长度为1)上已画出该三棱锥的主视图,请画出该三棱锥的左视图和俯视图;
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a15a004f7d47ed595f063e60075223a.png)
您最近一年使用:0次
2021-07-24更新
|
98次组卷
|
2卷引用:江西师范大学附属中学2020-2021学年高二4月月考数学(文)试题
2 . 如图所示的几何体,是由棱长为2的正方体
截去一个角后所得的几何体.
![](https://img.xkw.com/dksih/QBM/2021/7/6/2758556305981440/2766887251738624/STEM/d96f9fed-dbc5-4e77-b8e0-7177828446d1.png?resizew=246)
(1)试画出该几何体的三视图(主视图投影面平行平面
,主视方向如图所示);
(2)若截面
是边长为2的正三角形,求该几何体的体积
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/2021/7/6/2758556305981440/2766887251738624/STEM/d96f9fed-dbc5-4e77-b8e0-7177828446d1.png?resizew=246)
(1)试画出该几何体的三视图(主视图投影面平行平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b54387f870ae37f7951b253665d64f6.png)
(2)若截面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40304b883f3d23bbf066bc0af3c09862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54e84508decfcce6d2fcbe6c8c1a92.png)
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3 . 某一简单几何体的三视图如下图所示:请你根据其三视图画出此几何体的草图.
主视图:
左视图:![](https://img.xkw.com/dksih/QBM/2021/5/19/2724436627906560/2805647041617920/STEM/e1abdbf09b03406ebea91db55a67126f.png?resizew=102)
俯视图:
几何体的实物图:
主视图:
![](https://img.xkw.com/dksih/QBM/2021/5/19/2724436627906560/2805647041617920/STEM/fa29415fda4e463fb55381ddbc07578f.png?resizew=156)
![](https://img.xkw.com/dksih/QBM/2021/5/19/2724436627906560/2805647041617920/STEM/e1abdbf09b03406ebea91db55a67126f.png?resizew=102)
俯视图:
![](https://img.xkw.com/dksih/QBM/2021/5/19/2724436627906560/2805647041617920/STEM/dd15404c3568419192c2c1a103a38cef.png?resizew=158)
![](https://img.xkw.com/dksih/QBM/2021/5/19/2724436627906560/2805647041617920/STEM/c190da4809d74eadab72cc5c31b43a99.png?resizew=174)
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解题方法
4 . 如图所示的三个图中,上面的是一个长方体截去一个角所得多面体的直观图,它的正视图和侧视图在下面画出(单位:
)
![](https://img.xkw.com/dksih/QBM/2021/1/26/2644412494487552/2645966217216000/STEM/9ff942c10d2f41efb82eebf38c2e5384.png?resizew=224)
(1)按照给出的尺寸,求该多面体的体积;
(2)在所给直观图中连接
,证明:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://img.xkw.com/dksih/QBM/2021/1/26/2644412494487552/2645966217216000/STEM/9ff942c10d2f41efb82eebf38c2e5384.png?resizew=224)
(1)按照给出的尺寸,求该多面体的体积;
(2)在所给直观图中连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e0f0ccc8492a0ccf1eee24867060643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b48596fab810f292e000dfa6284cca9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe8a84ca3a13f82aff1a022edc66065.png)
您最近一年使用:0次
2021-01-28更新
|
105次组卷
|
2卷引用:安徽省安庆市怀宁县第二中学2020-2021学年高三上学期第五次月考数学(文)试题
解题方法
5 . 如果一个几何体的正视图与侧视图都是全等的长方形,边长分别是
与
.如图所示,俯视图是一个边长为
的正方形.
![](https://img.xkw.com/dksih/QBM/2021/1/11/2633942532571136/2634535176937472/STEM/cd4de2a4-340f-4d2d-b5fc-60216111c550.png?resizew=283)
(1)求该几何体的表面积;
(2)求该几何体的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/095ab4a92bf822e175d370e6d0c8a730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c78d0ab561d0c9bb9099772c596af8bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/095ab4a92bf822e175d370e6d0c8a730.png)
![](https://img.xkw.com/dksih/QBM/2021/1/11/2633942532571136/2634535176937472/STEM/cd4de2a4-340f-4d2d-b5fc-60216111c550.png?resizew=283)
(1)求该几何体的表面积;
(2)求该几何体的体积.
您最近一年使用:0次
解题方法
6 . 某几何体的三视图如图所示,求该几何体的表面积和体积.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/da3a04ab-6e3d-49ce-87e7-e31175249d4a.png?resizew=177)
您最近一年使用:0次
解题方法
7 . 已知某几何体的正视图、侧视图都是等腰三角形,俯视图是矩形,尺寸如图所示.
![](https://img.xkw.com/dksih/QBM/2021/4/1/2690328872615936/2691714917236736/STEM/c0d315b099444b3082abea67fa9e24bc.png?resizew=231)
(1)求该几何体的体积
;
(2)求该几何体的全面积
.
![](https://img.xkw.com/dksih/QBM/2021/4/1/2690328872615936/2691714917236736/STEM/c0d315b099444b3082abea67fa9e24bc.png?resizew=231)
(1)求该几何体的体积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54e84508decfcce6d2fcbe6c8c1a92.png)
(2)求该几何体的全面积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
您最近一年使用:0次
20-21高一·全国·单元测试
解题方法
8 . 如图是一个几何体的三视图及其尺寸,求该几何体的表面积和体积.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/8fb2453e-89cb-4ee5-b03f-9a1a5e616672.png?resizew=181)
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解题方法
9 . 如图所示,每个最小方格的边长为1.粗线部分是一个几何体的三视图.
![](https://img.xkw.com/dksih/QBM/2020/12/26/2622573361283072/2623470794276864/STEM/02b9e3ba-4886-47b3-bd1c-34623e9c78ae.png)
(1)画出该几何体的直观图;
(2)求该几何体的表面积.
![](https://img.xkw.com/dksih/QBM/2020/12/26/2622573361283072/2623470794276864/STEM/02b9e3ba-4886-47b3-bd1c-34623e9c78ae.png)
(1)画出该几何体的直观图;
(2)求该几何体的表面积.
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10 . 一个正三棱柱的三视图如图所示,求这个正三棱柱的表面积.
![](https://img.xkw.com/dksih/QBM/2020/12/26/2622426107985920/2623436803268608/STEM/9a3e14ab-9b24-407d-8d89-4b6a44a49f3b.png)
您最近一年使用:0次