如图,在正方体
中,棱长为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b289750716fa6f5fd41a862d6516dc6a.png)
、
分别为棱
,
的中点,过点
作一截面
,将正方体分为上下两部分.
到截面的距离;
(2)求正方体
在截面
下部分的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b289750716fa6f5fd41a862d6516dc6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f8e45b50c77bf6a2cde628ea3455ac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
(2)求正方体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
22-23高一下·湖北·期末 查看更多[3]
湖北省部分市州2022-2023学年高一下学期7月期末联考数学试题(已下线)高一下学期期末复习解答题压轴题二十四大题型专练(1)-举一反三系列(人教A版2019必修第二册)【人教A版(2019)】专题16立体几何与空间向量(第五部分)-高一下学期名校期末好题汇编
更新时间:2023-07-08 14:04:31
|
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解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】如图,在棱长为2的正方体
中,
分别是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/30/9ff418f3-da9a-4796-ae12-8bb329bae8f4.png?resizew=152)
(1)求平面
截正方体所得截面面积;
(2)证明:平面
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b094411c562930ff2d67b582cfd48cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b37c6f82c1eed122cc0749ac25ff114.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/30/9ff418f3-da9a-4796-ae12-8bb329bae8f4.png?resizew=152)
(1)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46e2da608b66c9aee03e2503388ba4fd.png)
(2)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4a46fbde58e12b1edc038ae9e921722.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed4cba9d2412e4a28f8740bddd5738d4.png)
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【推荐2】如图,在棱长为2的正方体
中,E是线段
的中点,平面
过点
、C、E.
截正方体所得的截面多边形的面积;
(2)平面
截正方体,把正方体分为两部分,求比较小的部分与比较大的部分的体积的比值.(参考公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(2)平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42fe6c3be7c88262111f832504a9d74a.png)
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【推荐1】如图,已知四面体
的棱长均为6,棱
的中点分别为
,用平面
截四面体
,得到三棱台
.
的体积;
(2)若
为棱
上的动点,求
的最小值,并求取最小值时线段
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a351136b18bc7d3bd5122332772ab23b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19bb1063e139610045f3bca5ca0b2766.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/927456b0989846a2f1573844bbaa2105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a351136b18bc7d3bd5122332772ab23b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8783bc74553bf44b61d999a0e4144bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8783bc74553bf44b61d999a0e4144bb.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eab4725a9dbfad84e3db6cfdce19c9b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
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【推荐2】如图,在四边形
中,
,
,
,
,
,求四边形
绕
旋转一周所成几何体的表面积及体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14d727fc23166b52faae23ea4b22a273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3f6bc33fdec22fa5da89839ff14a8a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2d466b9bbbe438a8018421ecb22e00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2bb2b82c880ad22b2f501dcb93ab409.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f3152261d8abdb031c0c254b5034c91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/10/2b705fa6-337c-4dd2-b330-529c5707bf3f.png?resizew=155)
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解答题-证明题
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适中
(0.65)
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解题方法
【推荐1】如图,已知正方体
的棱长为
.
平面
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4645450a006f2c20087486d0833afbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/239198e40085b7dcffbe747c9c265a05.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/239198e40085b7dcffbe747c9c265a05.png)
您最近一年使用:0次
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适中
(0.65)
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【推荐2】如图,四棱锥
中,
,
为正三角形,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/3/c1c874b8-c5ef-4b7e-928f-2e151f172977.png?resizew=160)
(1)证明:
平面
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bce559fceb4731f8d4323410075a22b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72e49817548cb45b3d1e58570644c6fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f656e1d1f68954e5f06de8958f6a9310.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037b342a682cbd4241855a243da3c016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa540507612bcb666413642e858eaded.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/3/c1c874b8-c5ef-4b7e-928f-2e151f172977.png?resizew=160)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9c9cfa597b444b5c9dbae7a825a695.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d923a338dd2d2e29336b42574d38448.png)
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