1 . 如图,正方体
的棱长为1,线段
上有两个动点E,F,且
.
![](https://img.xkw.com/dksih/QBM/2020/11/30/2604125919739904/2605692383002624/STEM/6b95c1a156814585ad6a43fcd0e05305.png?resizew=159)
(1)若P为
上的一点,则P到平面
的距离.
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cfbc0b5a8fbde804bd8425a4b76d207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e438a162ed349f7f25333e8f6c044e6d.png)
![](https://img.xkw.com/dksih/QBM/2020/11/30/2604125919739904/2605692383002624/STEM/6b95c1a156814585ad6a43fcd0e05305.png?resizew=159)
(1)若P为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90deda6e128fade762bdb3b74bedf511.png)
您最近一年使用:0次
名校
2 . 如图,已知一个八面体的各条棱长均为2,四边形ABCD为正方形,给出下列说法:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/17/0f4f4e3c-b80a-46fa-8106-dd7da09a91e9.png?resizew=176)
①该八面体的体积为
;②该八面体的外接球的表面积为8π;
③E到平面ADF的距离为
;④EC与BF所成角为60°.
其中正确的说法为__________ .(填序号)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/17/0f4f4e3c-b80a-46fa-8106-dd7da09a91e9.png?resizew=176)
①该八面体的体积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a391005600bdd69c96750589f9adb048.png)
③E到平面ADF的距离为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
其中正确的说法为
您最近一年使用:0次
2020-11-29更新
|
585次组卷
|
6卷引用:安徽省淮南市第一中学2020-2021学年高二上学期期中数学(文)试题
名校
解题方法
3 . 如图,直三棱柱
中,
是
的中点,且
,四边形
为正方形.
![](https://img.xkw.com/dksih/QBM/2020/9/10/2546795036418048/2549059134627840/STEM/c9d7c0a8c4eb47f5b81287309b45cdfa.png?resizew=298)
(1)求证:
平面
;
(2)若
,
,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/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://img.xkw.com/dksih/QBM/2020/9/10/2546795036418048/2549059134627840/STEM/c9d7c0a8c4eb47f5b81287309b45cdfa.png?resizew=298)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07391ef575d28f09bc5cda0ff8130a54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5888bec948373f3854258ad80171073d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7502eee6f33e8c940dec63ab6473c52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5888bec948373f3854258ad80171073d.png)
您最近一年使用:0次
2020-09-13更新
|
1171次组卷
|
8卷引用:2020届宁夏六盘山高级中学高三下学期第一次模拟考试数学(文)试题
名校
解题方法
4 . 在四棱锥
中,底面
是矩形,平面
平面
,
,
是
的中点.
,
.
![](https://img.xkw.com/dksih/QBM/2020/7/13/2505229941760000/2506474520821760/STEM/e6d1788f-5244-46e0-b35b-3fc555be0d06.png)
(1)求证:
;
(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/4cf9a6db3571fa57bfa2d5e4d44c51b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21665d21bbfb04410c78345de1fd15ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4cab41e3c3e1b04f0cff21aca315238.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://img.xkw.com/dksih/QBM/2020/7/13/2505229941760000/2506474520821760/STEM/e6d1788f-5244-46e0-b35b-3fc555be0d06.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2919a92ec8fdae2a7b8511fff31fa65.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea051187d473c953b3d81a6ebe4d21f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14f0106a1329dfce39bb51ae7c9c74ff.png)
您最近一年使用:0次
2020-07-15更新
|
219次组卷
|
4卷引用:河南省洛阳市2019-2020学年高二下学期期末质量检测数学(文)试题
名校
解题方法
5 . 如图,四棱锥
中,
底面ABCD,且底面ABCD为平行四边形,若
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/98ad3b2a-d9e2-47ed-8448-e9de39c05d39.png?resizew=169)
(1)求证:
;
(2)若
与底面ABCD所成的角为
,求点D到平面PBC的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4f5eec0addba78f2e0cdfb7ecc59a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/98ad3b2a-d9e2-47ed-8448-e9de39c05d39.png?resizew=169)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b07e317ffe7859e81b42ef4970e344a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
您最近一年使用:0次
2020-06-20更新
|
507次组卷
|
2卷引用:宁夏自治区银川市银川九中、石嘴山三中、平罗中学三校2020届高三下学期联考数学(文)试题
名校
解题方法
6 . 如图所示的多面体中,四边形
是正方形,平面
平面
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/c91ef16b-c1a5-4f72-bc92-6a52cb1ae1c7.png?resizew=194)
(1)求证:
;
(2)求点D到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec43f7352b3a8c194b4c37485fb4ffd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06772d7ccc921f77319c503c23326be2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b239bff8082937a752a7ce8444d49329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbd6348f7f46436e4fce4e87955f97ae.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/c91ef16b-c1a5-4f72-bc92-6a52cb1ae1c7.png?resizew=194)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80537d6b40787641ea2e59df6d1dbb50.png)
(2)求点D到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09d9d486b7f91ba933210dd013a7f2c.png)
您最近一年使用:0次
2020-05-22更新
|
508次组卷
|
5卷引用:2020届宁夏回族自治区银川一中高三第三次模拟考试数学(文)试题
解题方法
7 . 如图,在四棱锥
中,底面
为长方形,
底面
,
,
,
为
的中点,
为线段
上靠近
点的三等分点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/e0728b07-bf69-4866-bc95-e183c4403e00.png?resizew=207)
(1)求证:
平面
;
(2)求点
到平面
的距离.
![](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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9a4950a6e4202efd609507964af238b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/e0728b07-bf69-4866-bc95-e183c4403e00.png?resizew=207)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4c3f9dd5d0343597a7f58a1989b537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
您最近一年使用:0次
2020-05-09更新
|
207次组卷
|
2卷引用:2020届安徽省皖南八校高三第三次联考数学(文)试题
名校
解题方法
8 . 如图1,在梯形
中,
,且
,
是等腰直角三角形,其中
为斜边.若把
沿
边折叠到
的位置,使平面
平面
,如图2.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/2e0145d4-5210-4637-b439-a7c296a3107b.png?resizew=300)
(1)证明:
;
(2)若
为棱
的中点,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/641aa755ada1d83daafc82d5f1fa88db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/147de24f071e316b68fd2e78e3c84545.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/2e0145d4-5210-4637-b439-a7c296a3107b.png?resizew=300)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6ce152ae4cea885a04e753b0d7378b0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e6c2dad46a9052a4185a4f7b4ae8a2e.png)
您最近一年使用:0次
2020-05-09更新
|
866次组卷
|
7卷引用:2020届河南省新乡市高三第二次模拟数学(文科)试题
2020届河南省新乡市高三第二次模拟数学(文科)试题2020届辽宁省抚顺市高三下学期二模考试数学(文)试题宁夏固原市隆德县2020-2021学年高一上学期期末考试数学试题(已下线)第07讲 向量法求距离、探索性及折叠问题 (练)新疆维吾尔自治区和田地区洛浦县2023届高三上学期11月期中数学(理)试题四川省泸县第五中学2023届高三三诊模拟文科数学试题(已下线)重难点突破06 立体几何解答题最全归纳总结(九大题型)-1
9 . 如图,在多边形ABPCD中(图1),四边形ABCD为长方形,
为正三角形,
,
,现以BC为折痕将
折起,使点P在平面ABCD内的射影恰好在AD上(图2).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/55d77baa-44c7-49cf-8212-af1bf4d5b993.png?resizew=486)
(1)证明:平面
平面PAB;
(2)若点E在线段PB上,且
,当点Q在线段AD上运动时,求点Q到平面EBC的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4234cf4d8159f5df0333bcc269ffe099.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ea0df817e3e2cd95b9cd8f73386834c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4234cf4d8159f5df0333bcc269ffe099.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/55d77baa-44c7-49cf-8212-af1bf4d5b993.png?resizew=486)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342d452a7b850cd3a15b23619ad39bd7.png)
(2)若点E在线段PB上,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e643817238981987cf93b1614ba797.png)
您最近一年使用:0次
名校
解题方法
10 . 如图,在四棱锥
中,底面
为菱形,
,
平面
,
,点E,F分别为
和
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/139a17bb-6ca7-4aa6-bdb1-9e9bca93c22f.png?resizew=142)
(1)求证:直线
平面
;
(2)求点F到平面
的距离.
![](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/ea4f5eec0addba78f2e0cdfb7ecc59a6.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/3b610c9b9948d88eda8de0fb8d1cf972.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/139a17bb-6ca7-4aa6-bdb1-9e9bca93c22f.png?resizew=142)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dcafa398cc6b6079883e7ad153eb62d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bf12905647aeeded72bbca21a63f319.png)
(2)求点F到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bf12905647aeeded72bbca21a63f319.png)
您最近一年使用:0次
2020-03-23更新
|
1581次组卷
|
3卷引用:2020届宁夏银川一中高三第六次月考数学(文)试题