已知
、
为异面直线,
平面
,
平面
,若直线
满足
,
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f979a27d3a09a17445561091e6655eb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13761925fc1f25fd654a4b829032c8c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb26a220ed44c446105df7caa0f1063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b97ab842db26bc83a6ca5f580133c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c9b2c3117321788078867bd0701743b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039b3253795ea8487f13bd52a6ff4af7.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() ![]() | D.![]() ![]() ![]() |
更新时间:2024-05-24 14:35:48
|
相似题推荐
单选题
|
较难
(0.4)
【推荐1】在正方体
中,点M,N分别是线段
和
上不重合的两个动点,则下列结论正确的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/552b0939-7ce0-47a8-a3af-668f87b34399.png?resizew=160)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3490f2c22393e71edfbf594f6b3203b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d7fd56dcf0be537cf7327de17f27bbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7d6b1e0da4ddd744a8be5794290f5aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/552b0939-7ce0-47a8-a3af-668f87b34399.png?resizew=160)
A.![]() | B.![]() | C.平面![]() ![]() | D.平面![]() ![]() |
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【推荐2】如图,等边三角形
的中线
与中位线
相交于
,已知
是
绕
旋转过程中的一个图形,下列命题中,错误的是
![](https://img.xkw.com/dksih/QBM/2017/12/19/1841734419415040/1843095034847232/STEM/8100fafecf3145838fea213f2a8208d4.png?resizew=199)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf82d668d118cea6516f7999bb0cb42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ccbf98ff1b1f121ee3aa3dec108ba0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/2017/12/19/1841734419415040/1843095034847232/STEM/8100fafecf3145838fea213f2a8208d4.png?resizew=199)
A.恒有![]() ![]() |
B.异面直线![]() ![]() |
C.恒有平面![]() ![]() |
D.动点![]() ![]() ![]() |
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解题方法
【推荐1】如图所示,在长方体
中,点
是棱
上的一个动点,若平面
与棱
交于点
,给出下列命题:①四棱锥
的体积恒为定值;②直线
与直线
交于点
,直线
与直线
交于点
,则
、
、
三点共线;③当截面四边形
的周长取得最小值时,满足条件的点
至少有两个;④
为底面
对角线
和
的交点,在棱
上存在点
,使
平面
,其中真命题是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/26/519064ed-ae9c-46d2-8dbe-dbafecd6ad43.png?resizew=158)
![](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/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a83c0b8db2205a6815811aa4ff5390f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b492d99c54c1d881aa0532d918c19389.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15dc61d5de97b5a40be925b278ae494c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/408871c2b71ef88d6f556ce53cf73cc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6069dc466eec75bbeb3d5c9b51cb3a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3869b3d43cd1d050dac2baecc169f957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba4cffe5e9a3c0f5d2e3ac65fa30587d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/26/519064ed-ae9c-46d2-8dbe-dbafecd6ad43.png?resizew=158)
A.①②③ | B.②③④ | C.①②④ | D.①③④ |
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解题方法
【推荐2】如图,在棱长为1的正方体
中,P为棱
的中点,Q为正方形
内一动点(含边界),则下列说法中不正确 的是( )
![](https://img.xkw.com/dksih/QBM/2022/10/7/3082428759613440/3082833397030912/STEM/4d8efa58d1de47fe8ad6aaeef5805373.png?resizew=189)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72545bef56c4e32d1b76489bd32c3842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86814dbae9a5343d69bb4647900b3bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e5e9bf7536a8512ef10452ab5dda5be.png)
![](https://img.xkw.com/dksih/QBM/2022/10/7/3082428759613440/3082833397030912/STEM/4d8efa58d1de47fe8ad6aaeef5805373.png?resizew=189)
A.若![]() ![]() |
B.存在Q点,使得![]() ![]() |
C.当且仅当Q点落在棱![]() ![]() |
D.若![]() ![]() |
您最近一年使用:0次
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【推荐1】如图所示,在棱长为4的正方体
中,点M是正方体表面上一动点,则下列说法正确的个数为( )
①若点M在平面ABCD内运动时总满足
,则点M在平面ABCD内的轨迹是圆的一部分;
②在平面ABCD内作边长为1的小正方形EFGA,点M满足在平面ABCD内运动,且到平面
的距离等于到点F的距离,则M在平面ABCD内的轨迹是抛物线的一部分;
③已知点N是棱CD的中点,若点M在平面ABCD内运动,且
平面
,则点M在平面
内的轨迹是线段;
④已知点P、Q分别是
,
的中点,点M为正方体表面上一点,若MP与CQ垂直,则点M所构成的轨迹的周长为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/b1740a03-5dc2-4166-994e-f8a101e6332e.png?resizew=192)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
①若点M在平面ABCD内运动时总满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52c0965b4d20c0af23f4277aea6735e8.png)
②在平面ABCD内作边长为1的小正方形EFGA,点M满足在平面ABCD内运动,且到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
③已知点N是棱CD的中点,若点M在平面ABCD内运动,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2b2a58d14d9965504d45a6c2ab73995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac65a10ed3649f9808a115ab5651e1af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
④已知点P、Q分别是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6013e002411af616e89ea89632405b80.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/b1740a03-5dc2-4166-994e-f8a101e6332e.png?resizew=192)
A.1 | B.2 | C.3 | D.4 |
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【推荐2】如图,在平行四边形ABCD中,
,点E,F分别为边BC和AD上的定点,
,
,
,将
,
分别沿着AE,CF向平行四边形所在平面的同一侧翻折至
与
处,连接
,若
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/30a5c476-c23a-4a80-8e25-29418be5f29c.png?resizew=242)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/284e282bb1d9fbf8634b3506ee5358ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a77f26a7be722e00baa984f769ec8d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70abed7faf55deb24162255c5ad59577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df7626240940eb340420a605e95aeee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d4cacd518769ce19310f5d9c6e73b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291e7718b229183b8b138f6669bb30a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd46c836f4108d26b7ac0b45cc872816.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eeced00423f6216bae6896f892b4927.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fcab235def6dba64da906d018c5a6c9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/30a5c476-c23a-4a80-8e25-29418be5f29c.png?resizew=242)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】如图,直角梯形
,
,
,
,
是边
中点,
沿
翻折成四棱锥
,则点
到平面
距离的最大值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af260e0d98c95d1e092dc4c6d348e3ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829018a6ca0aff95d89e3f7cd943274e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f460edcced5597615113c0fdc95b1dfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f7d528d7d5aea71bb3d9df16055c2a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae9bd3db15b3c5062240b4438fe6476.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】已知椭圆
的左、右焦点分别为
、
,第一象限内的点
在椭圆上,且满足
,点
在线段
、
上,设
,将
沿
翻折,使得平面
与平面
垂直,要使翻折后
的长度最小,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef7fdc321551444b54aad83d10128502.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b490e09248ea3242ec67afae8d00c18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f12dbc34a442e7161f9ac15b39547c24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b42fc33bcfc63ec2f4940ccd3f862400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589e32ceb302a6b21faa2b9835e05096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceb1d97878dcc984d76f48dd85decdd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cdfc6a59392d1ac3cd89ddc0308864c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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