名校
解题方法
1 . 如图,在棱长为2的正方体
中,
,
,
分别是棱
,
,
的中点,
是底面
内一动点,若直线
与平面
不存在公共点,
的最小值为( )
![](https://img.xkw.com/dksih/QBM/2021/3/6/2671907400507392/2672926568554496/STEM/19a2b9b0c3f944e4a9da523695498bac.png?resizew=205)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c798204bbe306b3efd5bc9eae594c171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe8a84ca3a13f82aff1a022edc66065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24006d28116bc097933cc90bcc0ea69f.png)
![](https://img.xkw.com/dksih/QBM/2021/3/6/2671907400507392/2672926568554496/STEM/19a2b9b0c3f944e4a9da523695498bac.png?resizew=205)
A.2 | B.![]() | C.3 | D.![]() |
您最近一年使用:0次
2021-03-07更新
|
626次组卷
|
7卷引用:浙江省杭州市高级中学2020-2021学年高二下学期期中数学试题
浙江省杭州市高级中学2020-2021学年高二下学期期中数学试题北京市第二中学2022届高三上学期期中考试数学试题中国人民大学附属中学2021届高三3月开学检测数学试题(已下线)【新东方】高中数学20210527-003【2021】【高二下】(已下线)【新东方】高中数学20210527-004【2021】【高二下】北京市中国人民大学附属中学2021届高三下学期开学考试数学试题北京市海淀区中关村中学2022届高三上学期开学测试数学试题
19-20高一·浙江杭州·期末
名校
2 . 如图,正三棱柱
的底面边长为2,高为
,过
的截面与上底面交于
,且点
在棱
上,点
在棱
上.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/18/c5467134-d2a6-4544-a5b1-c78f9dcbd76e.png?resizew=206)
(Ⅰ)证明:
;
(Ⅱ)当点
为棱
的中点时,求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/18/c5467134-d2a6-4544-a5b1-c78f9dcbd76e.png?resizew=206)
(Ⅰ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bedf343529e631edbd092670bb2b37d7.png)
(Ⅱ)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/858f284c387da8f005621953a381462b.png)
您最近一年使用:0次
名校
3 . 如图,在三棱柱
中,
,侧面
为矩形,
.将
绕
翻折至
,使
在平面
内.
![](https://img.xkw.com/dksih/QBM/2020/5/27/2471764706566144/2472358593077248/STEM/4c4fdfd4d2ff4609b64232a98397234d.png?resizew=152)
(1)求证:
平面
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86740637132c6225e6623bd8dd404683.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b7b7793d29d66dfdd89e7a6564a35c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45f25fda027dc131cf3aa4a5e4dcd4f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee0f562ca5d978df45d65f3479a6957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e53b212640dadf751ef7f65a78a209.png)
![](https://img.xkw.com/dksih/QBM/2020/5/27/2471764706566144/2472358593077248/STEM/4c4fdfd4d2ff4609b64232a98397234d.png?resizew=152)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd597851c0db4e4de4769e10e09383b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7fc422a3771aee2b8b694759dda640d.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c46a7aa10d11654297047260b983cc95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b7b7793d29d66dfdd89e7a6564a35c.png)
您最近一年使用:0次
2020-05-28更新
|
242次组卷
|
2卷引用:浙江省杭州市学军中学2020-2021学年高二下学期期中数学试题
名校
4 . 如图,四棱锥
的底面
是平行四边形,
、
分别为 线段
、
上一点,若
,且
平面
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c70565a66dbb77fa02014e6048d239cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efea13ea393438d5dd34682e2c93620f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/250833a6c405ffd724b673b478c22919.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc46688d8723cf2003fc25890265200.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c70565a66dbb77fa02014e6048d239cf.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2018-12-21更新
|
930次组卷
|
6卷引用:【校级联考】浙江省杭州市八校联盟2018-2019学年高二上学期期中考试数学试题