画出满足下列条件的图形(其中A,B,M表示点,m,n,a,b表示直线,
,
表示平面):
(1)
,
,
,
;
(2)
,
,
,
,
;
(3)
,
,
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/539a38ada26356d73024fb8533449c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209323a7a4d015f7e570ec578c1731f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40b707f5ee4fbb2e637c65fbc6d8ed03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd8bd4bac49ddbc6a63711ddc503c4d9.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb0b6de90bb936cdb09629123100145d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16acea101c98a280a70c2fa0b2c04dd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e206ba221326d3e8fa9b833641757a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d52ecb73b78de005e278db5240763d6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40b707f5ee4fbb2e637c65fbc6d8ed03.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72d2a947e3fdc214d40a7d3f54679a73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5475e10ea3f37788e680395999037a00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40b707f5ee4fbb2e637c65fbc6d8ed03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53002de740b694c0a5eed9b6c412ceb6.png)
20-21高一·全国·课后作业 查看更多[2]
更新时间:2021-11-12 21:25:37
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相似题推荐
解答题-证明题
|
容易
(0.94)
【推荐1】如图,已知M、N分别是空间四边形ABCD的边AB、CD的中点.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5d9be9c2e3ea6385a1271e2286bbed.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/6/e71985ab-2266-4df8-a200-0c1882f7c6b4.png?resizew=146)
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解答题-证明题
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容易
(0.94)
【推荐2】在四棱锥
中,底面
是正方形,
与
交于点
,
底面
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990815334400/1571990820724736/STEM/7958bbe1b4d54372a097d4d3da4567e5.png)
(Ⅰ)求证:
∥平面
;
(Ⅱ)求证:
;
(Ⅲ)若
在线段
上是否存在点
,使
平面
?
若存在,求出
的值,若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990815334400/1571990820724736/STEM/df72c518f5254ba9bf06306d2a9893ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990815334400/1571990820724736/STEM/bbfd455610094e54953c81eef159e85c.png)
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990815334400/1571990820724736/STEM/cc0b6972db6d4d149aa8b7d55eed3b21.png)
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990815334400/1571990820724736/STEM/a6c92861146d456388719b8e32f8fdbb.png)
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990815334400/1571990820724736/STEM/2158c8ecfbb647d7bc95dc5b8a10d23e.png)
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990815334400/1571990820724736/STEM/235d7f7f59ff4821839b77a7e4427b25.png)
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990815334400/1571990820724736/STEM/0f0b1e447a5445099aa7532a7ba07413.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990815334400/1571990820724736/STEM/7958bbe1b4d54372a097d4d3da4567e5.png)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4734735213b599a9915e1ed91a5d8ce4.png)
(Ⅱ)求证:
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990815334400/1571990820724736/STEM/4ad47280323f48dfb0534b684968136d.png)
(Ⅲ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/383c2fe01c8162c3553805b89e4dd85e.png)
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990815334400/1571990820724736/STEM/f19ce6bfa5024abe91bdf9f401eb87b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990815334400/1571990820724736/STEM/ec32ad58d8ce4e359ebbdab7e7d2bad1.png)
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990815334400/1571990820724736/STEM/07a4a1fe8c1f45abb41d3f8c9ce0c532.png)
若存在,求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e01375423215809feac6a249e800aaf.png)
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解答题-问答题
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【推荐1】四条线段顺次首尾相接,所得的图形一定是平面图形吗?为什么?
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解答题-证明题
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容易
(0.94)
【推荐2】如图,E,F,G,H分别是空间四边形ABCD的边AB,BC,CD,DA的中点,求证:四点E,F,G,H共面.
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