1 . 在三棱锥
中,已知平面
平面
,
是底面
最长的边,三棱锥
的三视图如图1所示,其中侧视图和俯视图均为直角三角形;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/8d5a364d-6cc8-4f06-a8fe-6ac7eda18012.png?resizew=302)
(1)请在图2中,用斜二测画法,把三棱锥
的直观图补充完整(其中点
在
平面内),并指出三棱锥
的哪些面是直角三角形;
(2)求点
到面
的距离;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a3fd5284e160896f07ce367645fd04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/8d5a364d-6cc8-4f06-a8fe-6ac7eda18012.png?resizew=302)
(1)请在图2中,用斜二测画法,把三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7d96461d2b3421aed548b754637ca8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
您最近一年使用:0次
2 . (1)画出图所示的几何体的三视图.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/edfb36c1-2b21-4f26-9182-efd6df3a0f91.png?resizew=150)
(2)如图,以所给机器零件的正前方为正面方向,试画出它的三视图.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/34d199e7-e649-4437-8f05-1b73b080ccd0.png?resizew=154)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/edfb36c1-2b21-4f26-9182-efd6df3a0f91.png?resizew=150)
(2)如图,以所给机器零件的正前方为正面方向,试画出它的三视图.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/34d199e7-e649-4437-8f05-1b73b080ccd0.png?resizew=154)
您最近一年使用:0次
3 . 张师傅想要一个如图1所示的钢筋支架的组合体,来到一家钢制品加工店定制,拿出自己画的组合体三视图(如图2所示).店老板看了三视图,报了最低价,张师傅觉得很便宜,当即甩下定金和三视图,约定第二天提货.第二天提货时,店老板一脸坏笑的捧出如图3–1所示的组合体,张师傅一看,脸都绿了:“奸商,怎能如此偷工减料”.店老板说,我是按你的三视图做的,要不我给你加一个正方体,但要加价,随机加上了一个正方体,得到如图3–2所示的组合体;张师傅脸还是绿的,店老板又加上一个正方体,组成了如图 3–3 所示的组合体,又加价;张师傅脸继续绿,店老板再加一个正方体,组成如图 3–4 所示的组合体,再次加价;双方就三视图争吵不休……
![](https://img.xkw.com/dksih/QBM/2017/11/23/1823567309086720/1826097400733696/STEM/176bfe3737cd4d319fb1943cdbb94f0b.png?resizew=132)
![](https://img.xkw.com/dksih/QBM/2017/11/23/1823567309086720/1826097400733696/STEM/95953525cad6444d887f39c38ddfe900.png?resizew=180)
![](https://img.xkw.com/dksih/QBM/2017/11/23/1823567309086720/1826097400733696/STEM/2f912f4d78534410adec334483d1cc35.png?resizew=567)
你认为店老板提供的
个组合体的三视图与张师傅画的三视图一致的个数是
![](https://img.xkw.com/dksih/QBM/2017/11/23/1823567309086720/1826097400733696/STEM/176bfe3737cd4d319fb1943cdbb94f0b.png?resizew=132)
![](https://img.xkw.com/dksih/QBM/2017/11/23/1823567309086720/1826097400733696/STEM/95953525cad6444d887f39c38ddfe900.png?resizew=180)
![](https://img.xkw.com/dksih/QBM/2017/11/23/1823567309086720/1826097400733696/STEM/2f912f4d78534410adec334483d1cc35.png?resizew=567)
你认为店老板提供的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2017-11-27更新
|
246次组卷
|
2卷引用:六盘水市实验一中 2017-2018 学年高一第一学期期中考试数学试题