1 . 如图,直三棱柱
中,
是
的中点,四边形
为正方形.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/69bf5c52-f0f4-4dd8-bb35-c299d9b20c46.png?resizew=139)
(1)求证:
平面
;
(2)若
为等边三角形,
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/69bf5c52-f0f4-4dd8-bb35-c299d9b20c46.png?resizew=139)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/554923047631d16320c2ba39abeee99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5888bec948373f3854258ad80171073d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5888bec948373f3854258ad80171073d.png)
您最近一年使用:0次
2019-04-29更新
|
1505次组卷
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7卷引用:江西省宜春市第九中学2020-2021学年高二下学期第一次联考数学(文)试题
10-11高三上·广东茂名·期中
名校
解题方法
2 . 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
|
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14卷引用:江西省上高二中2022届高三上学期第二次月考数学(文)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)试题云南省楚雄天人中学2020-2021学年高二3月月考数学(文)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(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)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)试题上海市七宝中学2022届高三冲刺模拟卷二数学试题
3 . 如图,在正三棱柱
中,
,若二面角
的大小为
,则点C到平面
的距离为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0715b04d494f97e6efe2ff694388c73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/260200d547998bcac50a4a491382e7f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4510929422bc5b5eab2ef8034031f71.png)
A.1 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-08-17更新
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14卷引用:江西省宜春中学2021-2022学年高二上学期第一次月考数学(理)试题
江西省宜春中学2021-2022学年高二上学期第一次月考数学(理)试题江西省赣州市会昌县第五中学2020-2021学年高二上学期第一次月考数学(理)试题安徽省合肥市第八中学2020-2021学年高二上学期第一次段考理科数学试题广东省顺德市李兆基中学2019-2020学年高二上学期10月月考数学试题(已下线)2011-2012学年度陕西省西安市第一中学高二第一学期期末理科数学试卷(已下线)2014年高考数学(理)二轮复习专题能力测评5练习卷(已下线)2018年11月浙江省普通高中学业水平考试数学仿真模拟试题03【全国百强校】宁夏银川一中2018-2019学年高一上学期期末考试数学试题智能测评与辅导[理]-空间向量与立体几何河北省唐山市遵化市2019-2020学年高二上学期期中数学试题(已下线)第33练 空间角与距离-2021年高考数学(理)一轮复习小题必刷甘肃省张掖市临泽县第一中学2021-2022学年高二下学期期中考试数学(理)试题(已下线)狂刷37 空间角与距离-学易试题君之小题狂刷2020年高考数学(理)浙江省杭州外国语学校2023-2024学年高一下学期期中考试数学试卷
4 . 如图,在三棱锥
中,平面
平面
,
为等边三角形,
且
,
为
的中点,点
在
上.
![](https://img.xkw.com/dksih/QBM/2017/8/17/1754071681318912/1754180075036672/STEM/171fd13db56d4deb951e76e12c90c30d.png?resizew=127)
(1)求证:平面
平面
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63ab13ef156d034b710d811e09b0be34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9e5f1cfea3643c30c21732073a11ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3af4a22289b4d4575fbb838f09637416.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/2017/8/17/1754071681318912/1754180075036672/STEM/171fd13db56d4deb951e76e12c90c30d.png?resizew=127)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbf5269c5c16d69d41a3347c8cddba84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
2017-08-17更新
|
496次组卷
|
2卷引用:江西省宜春市上高二中2021-2022学年高二上学期9月第一次月考数学(文)试题
名校
解题方法
5 . 如图所示,在长方体
中,
分别是
的中点 .
(Ⅰ)求证:
平面
;
(Ⅱ)若
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d6dc34b0b71d46a91eb8dd8db01f5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45dddb86c2cb474b8bbf71e276ee1380.png)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b4cd2b33bd983a9ed6575b9de04a46a.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea3b6111b82679d210a7102d866d275a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/262b958cb704607cd5c0a92253de258e.png)
![](https://img.xkw.com/dksih/QBM/2017/2/25/1631786190127104/1633013630066688/STEM/d1e1e94bf5cc46a79a684cd187017ede.png?resizew=173)
您最近一年使用:0次
2017-02-27更新
|
1819次组卷
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3卷引用:江西省上高二中2020-2021学年高二下学期第六次月考数学(文)试题
6 . 如图,在四棱锥
中,底面
是正方形,
底面
,
, 点
是
的中点,
,且交
于点
.
(Ⅰ) 求证:
平面
;
(Ⅱ) 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/10c83f8945042b9c8fb2fbdac9308d62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc1e888069f54f7699b58131bd0c7f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/defa5b53043ae802bb1af7d14374406d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f04e6ed01c8f3778a64f055d33ee70c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(Ⅰ) 求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b30e2f7b22d83bef3421a4ecc7ed4a44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68a7bf0da4f7c6f739d2e2461ad9b7.png)
(Ⅱ) 求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1885efcff0b903e314057dd153578600.png)
![](https://img.xkw.com/dksih/QBM/2017/2/16/1625343125987328/1628986547060736/STEM/c8bd8cdfd394456490fcb4294240db81.png?resizew=177)
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2017-02-21更新
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1179次组卷
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3卷引用:江西省南昌市实验中学2021届高三2月月考数学(文)试题