名校
1 . 如图所示,在四棱锥
中,底面
是边长为
的正方形,
平面
二面角
的大小为
,
分别是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/fbbe7b72-05a9-480e-93cf-b17cbbee91b2.png?resizew=175)
(1)求证:
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cab69dcbdcd191102b0daf913c730055.png)
(2)在线段
上是否存在一点
,使得点
到平面
的距离为
,若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a955d5dab19e35c8e2a4437dae9e93f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c83f8945042b9c8fb2fbdac9308d62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efe11ff2c080a2346c3a0f156ebaabd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ee460fa5eec406f491e514ffd6285e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6241f9ef86cd0a902cbadaf336767dbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e6fec562d0b646ee75abe1cce5926d1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/fbbe7b72-05a9-480e-93cf-b17cbbee91b2.png?resizew=175)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93cbe73724146a6ae435dc1fa7e88b95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cab69dcbdcd191102b0daf913c730055.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc704b98f4ed2c7359a7a5b6498b5290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7294f5ae2a24ff42e84cd9773b2a7287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23901e208d26f1332a51d26cedab4677.png)
您最近一年使用:0次
2019-05-08更新
|
2007次组卷
|
8卷引用:【全国百强校】黑龙江省大庆第一中学2019届高三第二次模拟考试数学(理)试题
2 . 平行六面体
的底面是边长为4的菱形,且
,点
在底面的投影
是
的中点,且
,点
关于平面
的对称点为
,则三棱锥
的体积是
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/f6203ad6-0d71-42ae-a3b0-59abab2a928f.png?resizew=216)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71a46dc0bb5d8fa33583817e530a5d21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77803401dff1d688876b62a5aa8b5efc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73845d4d663b3de0b281611fe2c762fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddfe0ccf24d760c77535a70c92dad145.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/f6203ad6-0d71-42ae-a3b0-59abab2a928f.png?resizew=216)
A.4 | B.![]() | C.![]() | D.8 |
您最近一年使用:0次
名校
3 . 已知四边形
,点
为线段
的中点,且
.
,
.现将△
沿
进行翻折,使得
°,得到图形如图所示,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/f6854377-7546-4449-b017-8fede1cd0ad2.png?resizew=334)
(Ⅰ)若点
在线段
上,证明:
;
(Ⅱ)若
点为
的中点,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c00b23991a62dfba9d2a01c59a9c9bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002a3b0ffc896755f903da63e3989576.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4575e9f07e62b4a01a512fac3d81159.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5a7faee5e33f034c3bb82f9c95f903.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74bffbddf3f56776bda4324a3aca402a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf8f5ba65bd7b9c4790297c5bf200dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b10df640ea855ac9be70efa752652682.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3e114a50fdde2960fbf20c2a83693bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c07cd985e255eaa7f2979dcd7cc742f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5c9ca3af3eb8bc486f7b3f29f5065eb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/f6854377-7546-4449-b017-8fede1cd0ad2.png?resizew=334)
(Ⅰ)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5c9ca3af3eb8bc486f7b3f29f5065eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4897a57f938ec3477416a47918a9fc45.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ff6089095a8b825eeb8002b6996929e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02be2e28cef91610fc5e92ab1a2ad075.png)
您最近一年使用:0次
4 . 在四棱锥
中,底面
是边长为
的菱形且中心为点
,
,且点
在底面
上的投影为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/97e8237b-dae2-4ee0-93ac-4c04aa01340d.png?resizew=171)
(1)若
为
的中点,求证:
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ead7c62c40bd5d19a478eee3c11957cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60a5ef83b3287388f352eba937280270.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07e37b122a7273e1251ea3860e74c896.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/97e8237b-dae2-4ee0-93ac-4c04aa01340d.png?resizew=171)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4349207577312a34be8428d01e28d051.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc7d4618e1b7e2097912a22bd19b7e9.png)
您最近一年使用:0次
5 . 如图,在三棱锥
中,
面
,∠BAC=
,且
=1,过
点作平面
,分别交
于
点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/c6e09dd9-ce45-4aa7-94dd-552b72b55450.png?resizew=152)
(1)若
求证:
为
的中点;
(2)在(1)的条件下,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc2aaed1e9ead175f30f7130569d0411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb4564baf209de77802d46cda82995c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/787ac5e13622afab5e9f8603afe42356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51acbb5dfeb69b8a142112e29cd2fab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/799d79fb4ffb0405c1683f12a18a6f5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e867e5eac6de1647a9ede91ffa083f4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1f07b8d6a9059fa1ffb78b57cf3affa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad57e3727b7bbd795b05332fbf9649e9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/c6e09dd9-ce45-4aa7-94dd-552b72b55450.png?resizew=152)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70c47f45987d34be14fce7fe97bfa717.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30513ea48bc1ef3ae78adac83d894f14.png)
(2)在(1)的条件下,求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/703fba3df37eadf8f5c9285576b3a9ad.png)
您最近一年使用:0次
2019-03-02更新
|
558次组卷
|
4卷引用:江西省吉安市第一中学、新余一中2019届高三下学期第一次联考数学(文)试题
6 . 如图,在正三棱柱
中,
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/67cf1cb1-af03-4c91-a385-e468bd8bd35f.png?resizew=220)
(1)求证:
平面
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/446091491fb55549972f35a206fcab1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/67cf1cb1-af03-4c91-a385-e468bd8bd35f.png?resizew=220)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca43c6d158c63be017c0637eaaecb2bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f62fd0b510920be6bc60d170c3ff3da3.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f62fd0b510920be6bc60d170c3ff3da3.png)
您最近一年使用:0次
名校
7 . 如图所示,四棱锥
,已知平面
平面
,
,
,
,
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/53c5fa39-51df-4290-9337-9cf3f61550bd.png?resizew=132)
(1)求证:
;
(2)求
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5164a3cc47e266446d49127e2ef10c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/306b9504b52df5ad6697fa87200e8a44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4fb90434b6da93bdc6590f769ef118b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7bae5203f4b4acf23779114b3466e17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58899f5c3638f1e32274137723f99836.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/104cacf19f1897c6c86d24c5fe8cb991.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/53c5fa39-51df-4290-9337-9cf3f61550bd.png?resizew=132)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589ddae20626f9aaac616d2a3b5d95bd.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
您最近一年使用:0次
10-11高三上·广东茂名·期中
名校
解题方法
8 . 如图,四面体
中,
、
分别是
、
的中点,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/15/fb30b1be-9b20-46fc-be02-fd044cc27f15.png?resizew=202)
(1)求证:
平面
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a65d5853c26657db448af610ac72cca4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6559aabe16c2318687089e7cc498b98.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/15/fb30b1be-9b20-46fc-be02-fd044cc27f15.png?resizew=202)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce03b310edce42191f9fa75a1c909ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
您最近一年使用:0次
2021-09-10更新
|
531次组卷
|
14卷引用:2011届广东省高州三中高三上学期期中考试数学卷
(已下线)2011届广东省高州三中高三上学期期中考试数学卷(已下线)2011届江苏省南京金陵中学高三预测卷2数学陕西省咸阳市永寿中学2020-2021学年高三上学期开学考试数学(文)试题(已下线)专题19 立体几何综合-2020年高考数学(文)母题题源解密(全国Ⅰ专版)江西省新余市重点高中2022届高三上学期第二次月考 数学(文)试题2014-2015学年黑龙江哈尔滨师大附中高二上学期期末考试理科数学卷山西省朔州市怀仁县第一中学2018-2019学年高二下学期期末数学试题福建省泉州市晋江市南侨中学2019-2020学年高二上学期11月月考数学试题天津市静海县第一中学2017-2018学年高二10月学生学业能力调研数学试题江西省上高二中2022届高三上学期第二次月考数学(文)试题吉林省东北师大附中、长春市十一高中、吉林一中、四平一中、松原实验中学2021-2022学年高三上学期联合模拟考试数学(文)试题黑龙江省大庆铁人中学2021-2022学年高三上学期期中考试文科数学试题上海市七宝中学2022届高三冲刺模拟卷二数学试题云南省楚雄天人中学2020-2021学年高二3月月考数学(文)试题
9 . 如图,在三棱柱
中,四边形
是菱形,四边形
是正方形,
,
,
,点
为
的中点.
![](https://img.xkw.com/dksih/QBM/2019/1/1/2109362523103232/2110187817123840/STEM/f595211a-ed2a-4962-a64a-c4c500e8c111.png)
(1)求证:
平面
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/986ba572d8373df48c996f8c8611498c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d70676406f26d339465fe3473c0c05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/937b9e610b548398bc46ed29951e7f74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/822ba132ca9dd0d4a050659aef3c9b26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2019/1/1/2109362523103232/2110187817123840/STEM/f595211a-ed2a-4962-a64a-c4c500e8c111.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/486a67e7974099983dabc0f1b2b4675e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af841bc357e88fac4834ea8b6b3e9207.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af841bc357e88fac4834ea8b6b3e9207.png)
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2019-01-02更新
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876次组卷
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7卷引用:【校级联考】江西省名校学术联盟2019届高三年级教学质量检测考试(二)(12月联考)数学(理)试题
10 . 已知四棱锥
的底面为菱形,且
,
,
.
(1)求证:平面
平面
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05d82d07acbee5b207c7d053c422868f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fccf1cd8600af23d55876ab14e66e2d4.png)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bde1e200d1dd5ddc433c876c9d2f688c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46e2da608b66c9aee03e2503388ba4fd.png)
![](https://img.xkw.com/dksih/QBM/2018/11/27/2084604227166208/2086722362679296/STEM/580eea9a321e4a219bb133b414c6b7fd.png?resizew=200)
您最近一年使用:0次