解题方法
1 . 图,已知多面体
中,
平面
,
平面
,且
,
,
,
四点共面,
是边长为2的菱形,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/b13e4696-11e0-43bc-9c09-3c1cfa0f5656.png?resizew=201)
(1)求证:
平面
;
(2)求多面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a38e6c6dfde2b19b6b47f35a439a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6906f59d09ce31956d6f5ea2b23fc77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/334fec9ec91596bf9d2b41568123715f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/b13e4696-11e0-43bc-9c09-3c1cfa0f5656.png?resizew=201)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a5f445af1ae136773cb338920552ff2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4734735213b599a9915e1ed91a5d8ce4.png)
(2)求多面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
您最近一年使用:0次
名校
解题方法
2 . 如图所示,在直三棱柱
中,
是
的中点.![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
平面
;
(2)设
,求几何体
的体积.
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74bca84ad86c648d3bb20c8909c8da3f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe1d6750e4b38ecfae78c0eed96153b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e9f157d1d7cfb37741825e3e9bcb9c.png)
您最近一年使用:0次
2022-06-20更新
|
1213次组卷
|
4卷引用:第31讲 空间几何体体积及点到面的距离问题4种题型
(已下线)第31讲 空间几何体体积及点到面的距离问题4种题型(已下线)8.5.2 直线与平面平行(精练)-【题型分类归纳】2022-2023学年高一数学同步讲与练(人教A版2019必修第二册)陕西省西安中学2022-2023学年高一下学期期中考试数学试题辽宁省六校协作体2021-2022学年高一下学期第三次联合考试数学试题
名校
解题方法
3 . 如图,在多面体
中,底面
是正方形,
,
,
底面
.
![](https://img.xkw.com/dksih/QBM/2022/4/11/2955971828899840/2957815720845312/STEM/a79a29e58b484996bb232c2f5d874249.png?resizew=196)
(1)证明:
平面
;
(2)若
,求该多面体的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d4ea87a0837c4eee99c8b5ba6ec977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56dd125a93bf6d5567753b059eec6a9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a22d6b860f06fe23618b0d3de6768fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2022/4/11/2955971828899840/2957815720845312/STEM/a79a29e58b484996bb232c2f5d874249.png?resizew=196)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e3c0430146b7b8d40ebb721a4d0de19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6261790c66cc71ee3898afabad0c09f4.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0fc232acd89fc499de346969ce8ced1.png)
您最近一年使用:0次
2022-04-14更新
|
1177次组卷
|
6卷引用:第31讲 空间几何体体积及点到面的距离问题4种题型
(已下线)第31讲 空间几何体体积及点到面的距离问题4种题型山东省泰安市泰安第一中学2021-2022学年高一下学期期中数学试题江西省赣州市第四中学2022-2023学年高二下学期期中数学试题陕西省榆林市2022届高三下学期三模文科数学试题(已下线)回归教材重难点03 立体几何-【查漏补缺】2022年高考数学(文)三轮冲刺过关(已下线)必刷卷02(文)-2022年高考数学考前信息必刷卷(全国乙卷)
名校
解题方法
4 . 如图,在长方体
中,
,点
是
的中点,
在
上,且
.若过
的平面
交
于
,交
于
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/7d94e07f-a7a7-426c-bc53-4404a4f5250c.png?resizew=153)
(1)求证:
平面
;
(2)若
,求多面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d71121f0da778645dbe350e07b66f242.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be41b05e11ba5eadaaed9a224b949774.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c2293f93791a597bf0162411f3395f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/7d94e07f-a7a7-426c-bc53-4404a4f5250c.png?resizew=153)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a407b262c22419f73396170ecdc849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1956db288a5a3b8c97d2539e9e5e4f85.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1364213f546b37f8764ddcb59e36ae4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66f548d30393eb2b16dfb59b1d0afee4.png)
您最近一年使用:0次
2022-02-23更新
|
385次组卷
|
3卷引用:河北省石家庄二十七中2022-2023学年高一下学期期中数学试题
河北省石家庄二十七中2022-2023学年高一下学期期中数学试题四川省雅安市2022届高三学业质量监测(零诊)文科数学试题(已下线)热点06 空间位置关系的判断与证明-2022年高考数学【热点·重点·难点】专练(全国通用)
5 . 如图,平面
平面
,四边形
和四边形
均为正方形.
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/53a88615-73f4-4d40-9ef9-08712ea0e81d.png?resizew=167)
(1)求证:平面
平面
;
(2)求多面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a5628323a7eeb11213df5c9048b3543.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369eb8ad56da7dc1cdb7c43762be4bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/283617ef0ce367976058b4fbbe86b49f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bd9e2b43bbe5ef4f9b1ab9a256444d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/53a88615-73f4-4d40-9ef9-08712ea0e81d.png?resizew=167)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d782bc4aad7cf35baa3de7b8ea73e41f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/233015062824e26bf4b6a755c428dcae.png)
(2)求多面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20e38a1b5cfffd43a3405481a1d67cd.png)
您最近一年使用:0次
2021-07-21更新
|
441次组卷
|
3卷引用:河北省盐山中学2022-2023学年高一下学期期中数学试题
名校
解题方法
6 . 如图,三棱锥
中,平面
平面
,点
在线段
上,且
,点
在线段
上,且
平面
.
![](https://img.xkw.com/dksih/QBM/2021/11/5/2844851946840064/2850376136589312/STEM/e92562356abe4ad79039ead9eb5ddf0b.png?resizew=285)
(1)证明:
平面
;
(2)若四棱锥
的体积为7,求线段
的长.
![](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/42deb6707a04e7810c10a8370f2422d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93eb64abcc57d57256902c99f071b751.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://img.xkw.com/dksih/QBM/2021/11/5/2844851946840064/2850376136589312/STEM/e92562356abe4ad79039ead9eb5ddf0b.png?resizew=285)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d246f9eceab371ebf47a47c2f11a4ad.png)
(2)若四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ac49e2f895d4667404c1e648fa70dac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
您最近一年使用:0次
7 . 如图①,在正方体ABCD-A1B1C1D1中,E,F,G分别为AB,BC,BB1,的中点.
(2)将该正方体截去八个与四面体B-EFG相同的四面体得到一个多面体(如图②),若该多面体的体积是
,求该正方体的棱长.
(2)将该正方体截去八个与四面体B-EFG相同的四面体得到一个多面体(如图②),若该多面体的体积是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23794a21242b490bce57b8e20e57e44.png)
您最近一年使用:0次
2021-08-07更新
|
464次组卷
|
3卷引用:浙江省宁波市余姚市2022-2023学年高一下学期期末数学试题
解题方法
8 . 如图,在四棱锥
中,底面
是边长为
的菱形,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
为正三角形,且侧面
底面
,E为线段
的中点,M在线段
上.
![](https://img.xkw.com/dksih/QBM/2021/5/20/2725201910865920/2726315748270080/STEM/e9c6c927-4045-4981-b07c-61928b3fca9c.png?resizew=293)
(1)求证:
;
(2)当点
满足
时,求多面体
的体积.
![](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/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/2021/5/20/2725201910865920/2726315748270080/STEM/e9c6c927-4045-4981-b07c-61928b3fca9c.png?resizew=293)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bc56fdf70e65bd88980c64af96b83da.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/515cbd4812397175980507ca44572c3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d231b17c5992eee495184b0eae66749.png)
您最近一年使用:0次
2021-05-22更新
|
793次组卷
|
3卷引用:重庆市缙云教育联盟2022-2023学年高一下学期期末数学试题
重庆市缙云教育联盟2022-2023学年高一下学期期末数学试题陕西省宝鸡市千阳中学2021届高三下学期第四次适应性训练文科数学试题(已下线)专题01 立体几何求体积-【解题思路培养】2022年高考数学一轮复习解答题拿分秘籍(全国通用版)
名校
解题方法
9 . 如图,三棱锥
中,
面
,△
为正三角形,点
在棱
上,且
,
、
分别是棱
、
的中点,直线
与直线
交于点
,直线
与直线
交于点
,
,
.
![](https://img.xkw.com/dksih/QBM/2021/5/25/2728756793131008/2732676227137536/STEM/49dc0940-1a15-46fb-a53b-6e26ff37f2ff.png?resizew=222)
(1)求证:
;
(2)求几何体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16bb05a7f4b2287c2e2bea06544044d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3c3f13203c1915b104924f650fe4227.png)
![](https://img.xkw.com/dksih/QBM/2021/5/25/2728756793131008/2732676227137536/STEM/49dc0940-1a15-46fb-a53b-6e26ff37f2ff.png?resizew=222)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e210c9698063925ad2df6b6c1749571.png)
(2)求几何体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
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3卷引用:山东省泰安第二中学2022-2023学年高一下学期期中数学试题
山东省泰安第二中学2022-2023学年高一下学期期中数学试题四川省攀枝花市2021届高三三模数学(文科)试题(已下线)专题01 立体几何求体积-【解题思路培养】2022年高考数学一轮复习解答题拿分秘籍(全国通用版)
20-21高一下·浙江·期末
名校
10 . 如图,在棱长为
的正方体
中,
点是
的中点.
![](https://img.xkw.com/dksih/QBM/2021/6/2/2734570351747072/2734863987220480/STEM/a76772f9-52d8-4949-bd00-06a17d7c292d.png?resizew=211)
(1)证明:
平面
;
(2)求三棱锥
外接球的表面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](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/22adbc0da438220f9cace11b629d799b.png)
![](https://img.xkw.com/dksih/QBM/2021/6/2/2734570351747072/2734863987220480/STEM/a76772f9-52d8-4949-bd00-06a17d7c292d.png?resizew=211)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60426d3c6f8c8bde775914fa9f0a7fe0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81bf7a859123936a07193592e089340a.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61df721e926fddc37c15a341e4559a28.png)
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3卷引用:新疆维吾尔自治区2022-2023学年高一下学期期末考试数学试题
新疆维吾尔自治区2022-2023学年高一下学期期末考试数学试题(已下线)【新东方】高中数学20210527-021【2021】【高一下】山西省阳泉市第一中学校2023-2024学年高二上学期开学分班数学试题