名校
解题方法
1 . 如图,直三棱柱
中,
,
,且N是
的中点.
![](https://img.xkw.com/dksih/QBM/2020/5/21/2467729641340928/2470499286007808/STEM/3478c598a9b545f4a947565401a2c09f.png?resizew=125)
(1)求证:直线
平面
;
(2)若M在线段
上,且
平面
,求证:M是
的中点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeed487430a5b8a330f2d0c52166521a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://img.xkw.com/dksih/QBM/2020/5/21/2467729641340928/2470499286007808/STEM/3478c598a9b545f4a947565401a2c09f.png?resizew=125)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c7c261740ac2ae26715e1298ca278a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afac7c616bbb14e1ed428a3c507c7dc.png)
(2)若M在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
您最近一年使用:0次
名校
解题方法
2 . 已知四棱锥
中,
底面
,
,且底面
是边长为1的正方形.
是最短的侧棱
上的动点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/fb571058-9f46-45cc-a728-b5ba07b1fbc1.png?resizew=189)
(Ⅰ)求证:
、
、
、
、
五点在同一个球面上,并求该球的体积;
(Ⅱ)如果点
在线段
上,
,
∥平面
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f1897a7e856b42f8cee0f286ad913d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2899e607479d8d1c47d954ae9ebb7144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/fb571058-9f46-45cc-a728-b5ba07b1fbc1.png?resizew=189)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(Ⅱ)如果点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d26e9cfe59d169dd1f86feee7af3c61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1bb9d82f939a1ed231721e1ec2ae70e.png)
您最近一年使用:0次
名校
解题方法
3 . 如图,正方体
中,
,
,
,
分别是
,
,
,
的中点.
![](https://img.xkw.com/dksih/QBM/2020/5/12/2461212482584576/2461387251236864/STEM/bdf86d8d59494736a1c4d958383465ad.png?resizew=195)
(Ⅰ)求证:
,
,
,
四点共面;
(Ⅱ)求证:平面
∥平面
;
(Ⅲ)画出平面
与正方体侧面的交线(需要有必要的作图说明、保留作图痕迹).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://img.xkw.com/dksih/QBM/2020/5/12/2461212482584576/2461387251236864/STEM/bdf86d8d59494736a1c4d958383465ad.png?resizew=195)
(Ⅰ)求证:
![](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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(Ⅱ)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1885efcff0b903e314057dd153578600.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ecec8889fc0ae96afcf1d98c1b4eb6.png)
(Ⅲ)画出平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c33f14c4f22f3f8a2ce0cb5625940b2e.png)
您最近一年使用:0次
解题方法
4 . 如图,在四棱锥
中,
,
,
,
,
,
,
平面
,点
在棱
上.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/be9b660c-d38d-4fb0-9d68-3b6b59c84498.png?resizew=164)
(1)求证:平面
平面
;
(2)若直线
平面
,求此时三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c24a968c73e960698a572ab01e3698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecbb2dce15f3d0fe839688575d2a8ff8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923718ac7b296dd2c3b5b1d8ea0c3b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83c3f76bc7569c3c088da98bb3b2c50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/be9b660c-d38d-4fb0-9d68-3b6b59c84498.png?resizew=164)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/373f735f0f04d11f1951eaef1bb78b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9af29254fe60a392c249c5791279e9c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9906ca0da086c36c05fe3e42cf373fe.png)
您最近一年使用:0次
解题方法
5 . 如图,在四棱锥
中,底面
是梯形,
,
底面
,
,
,
,
分别是线段
,
的中点,过
,
的平面
与底面
的交线为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/7b98d323-7317-46f3-bcb6-d3f7a62cf4d0.png?resizew=189)
(1)证明:
;
(2)若
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c83f8945042b9c8fb2fbdac9308d62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c828839ec7daffe75d61c24298afe7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92aab20d35eee99409fc27aaefdd308a.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/8a6e2867f32d3f1c3cd36cd3a11a8580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.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/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/7b98d323-7317-46f3-bcb6-d3f7a62cf4d0.png?resizew=189)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/237a03b75c6d78bbf9c20396d8c446c4.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bba79915db351bf9a9151f0492ec57a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ef796b46e68fe77b117ff0483d2370c.png)
您最近一年使用:0次
6 . 如图,在以
、
、
、
、
、
为顶点的五面体中,四边形
为正方形,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/3f7306a7-daf1-4705-b0a1-e64c19399e84.png?resizew=280)
(1)证明
;
(2)求二面角
的平面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77dcc2807683f4350012c08f8334c74e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c110b541a8ba18891f458b1016472dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/644f6a852eabbbb6a34f2c39b33cde92.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/3f7306a7-daf1-4705-b0a1-e64c19399e84.png?resizew=280)
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91025cb468543b7430955eea9b28ac79.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa6f1d672d4d7775a81ccf0464a8d742.png)
您最近一年使用:0次
2020-04-17更新
|
458次组卷
|
2卷引用:2020届金太阳高三4月联考数学(理)试题
名校
解题方法
7 . 如图,在四棱锥
中,底面
是平行四边形,
平面
,
是棱
上的一点,满足
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/1147598c-b995-4ba3-8bae-0bac67b22528.png?resizew=189)
(Ⅰ)证明:
;
(Ⅱ)设
,
,若
为棱
上一点,使得直线
与平面
所成角的大小为30°,求
的值.
![](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/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/373f735f0f04d11f1951eaef1bb78b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/1147598c-b995-4ba3-8bae-0bac67b22528.png?resizew=189)
(Ⅰ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fec78c2154c5972efd438a6555afaf2d.png)
(Ⅱ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7794325335aa508186003c333e95ed5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ea52361458ce2e49ed0fe99d8e6c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb08a3eed3af2bdcb9d30e8b142de47f.png)
您最近一年使用:0次
2020-03-15更新
|
640次组卷
|
3卷引用:2020届内蒙古鄂尔多斯市第一中学高三下学期第一次模拟考试数学(理)试题
名校
解题方法
8 . 如图,已知四边形ABCD是平行四边形,点P是平面ABCD外一点,M是PC的中点,在DM上取一点G,过G和AP的平面交平面BDM于GH,H在BD上.
![](https://img.xkw.com/dksih/QBM/2020/2/21/2404029688848384/2405088510320640/STEM/5a4cecd681e3454bb7ae73f790b53e70.png?resizew=199)
(1)求证
平面BDM.
(2)若G为DM中点,求证:
.
![](https://img.xkw.com/dksih/QBM/2020/2/21/2404029688848384/2405088510320640/STEM/5a4cecd681e3454bb7ae73f790b53e70.png?resizew=199)
(1)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdea4ee495cffb66daf69db94638cb95.png)
(2)若G为DM中点,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b3f934fe2fe38d815bd02ddec94153a.png)
您最近一年使用:0次
9 . 如图,在四棱锥
中,底面
是梯形,且
,
,点
是线段
的中点,过
的平面
交平面
于
,且
,
,且
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/0e3e472b-8153-40f6-aec8-4bf65dddab8a.png?resizew=164)
(1)求证:
;
(2)求直线
与平面
所成角的余弦值.
![](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/ae1e04eeb4de72e5750dae77bcb6f88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e839ac941e8bf536ff35a12e56c7a400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c945a21844d5447f4e2d24454a942462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d84733f9dc908ceb11459cc2aed580ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6698d3452602370e219ec33b4882441.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27b7691ed9b548704da4e119e477d408.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/965b45ac7e3e6f8f4b03cff512a3f7d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9228b213dc6b256b752b38a466ebec93.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/0e3e472b-8153-40f6-aec8-4bf65dddab8a.png?resizew=164)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90b568da8b1fd3313a4904000d0481c0.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
10 . 如图所示,在直角梯形BCEF中,∠CBF=∠BCE=90°,A,D分别是BF,CE上的点,AD∥BC,且AB=DE=2BC=2AF(如图1),将四边形ADEF沿AD折起,连结BE、BF、CE(如图2).在折起的过程中,下列说法中正确的个数( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/afb9123e-9037-46fe-90ec-dfab5c87423c.png?resizew=304)
①AC∥平面BEF;
②B、C、E、F四点可能共面;
③若EF⊥CF,则平面ADEF⊥平面ABCD;
④平面BCE与平面BEF可能垂直
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/afb9123e-9037-46fe-90ec-dfab5c87423c.png?resizew=304)
①AC∥平面BEF;
②B、C、E、F四点可能共面;
③若EF⊥CF,则平面ADEF⊥平面ABCD;
④平面BCE与平面BEF可能垂直
A.0 | B.1 | C.2 | D.3 |
您最近一年使用:0次
2020-01-15更新
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2218次组卷
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13卷引用:人教A版 全能练习 必修2 第二章 第三节 2.3.4 平面与平面垂直的性质
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