名校
1 . 给出下列命题:
(1)直线
与线段
相交,其中
,
,则
的取值范围是
;
(2)点
关于直线
的对称点为
,则
的坐标为
;
(3)圆
上恰有
个点到直线
的距离为
;
(4)直线
与抛物线
交于
,
两点,则以
为直径的圆恰好与直线
相切.
其中正确的命题有_________ .(把所有正确的命题的序号都填上)
(1)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d50586ff0822c7d00945bc38d67c40a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d69f777281a6319434ccb7e845cc354.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f4e703f37a1d6516e6516a7e36f06f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d43eb5d13c51115c0ca3087bb0b50a9.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c454d7cebb5355b61d71cafb47afd72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04eed461026f69fe9ab2c5dc12af8ac7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9f50605db5d5f8f3a01ee8e474a112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9f50605db5d5f8f3a01ee8e474a112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/461a7df65c0cc0442bba8de81c7b2362.png)
(3)圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9ab11ba6b230c4309e1b899eb58daae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e368a6187d2efc6f28c840303c3778f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
(4)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e6e15daf7b14dbff32c390f4984dcfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
其中正确的命题有
您最近一年使用:0次
2020-01-28更新
|
619次组卷
|
4卷引用:山西省2019-2020学年高二上学期期末考试数学(理)试题
名校
2 . 如图,在四边形ABCD中,AD∥BC,AD=AB,∠BCD=45°,∠BAD=90°,将△ABD沿BD折起,使平面ABD⊥平面BCD,构成三棱锥A﹣BCD,则在三棱锥A﹣BCD中,下列判断正确的是_____ .(写出所有正确的序号)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/36bc39f2-a768-4eb3-aec4-a04127af96c4.png?resizew=277)
①平面ABD⊥平面ABC
②直线BC与平面ABD所成角是45°
③平面ACD⊥平面ABC
④二面角C﹣AB﹣D余弦值为
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/36bc39f2-a768-4eb3-aec4-a04127af96c4.png?resizew=277)
①平面ABD⊥平面ABC
②直线BC与平面ABD所成角是45°
③平面ACD⊥平面ABC
④二面角C﹣AB﹣D余弦值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4d9ff190d74979422dae71751c6fba.png)
您最近一年使用:0次
2020-05-16更新
|
1084次组卷
|
6卷引用:天津市六校2018-2019学年高一下学期期中数学试题
3 . 如图,在四棱锥
中,底面
为正方形,
底面
,
,
为线段
的中点,
为线段
上的动点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/6d0e80f4-f26a-4aee-9fdc-228773ea3ce1.png?resizew=185)
(1)平面
与平面
是否互相垂直?如果垂直,请证明;如果不垂直,请说明理由.
(2)若
,
为线段
的三等分点,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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829f9180ddd9aa1a0ee0dc520f4e0b5f.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://img.xkw.com/dksih/QBM/editorImg/2022/11/30/6d0e80f4-f26a-4aee-9fdc-228773ea3ce1.png?resizew=185)
(1)平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.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/995a088fcda96211dbd41daab559c614.png)
您最近一年使用:0次
2020-01-17更新
|
354次组卷
|
2卷引用:山西省大同市第一中学2019-2020学年高三下学期2月网上月考(开学)数学(文)试题
名校
4 . 某几何体的三视图如图所示,则该几何体的体积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/231042cf-10e9-4cba-94e8-691bec64fa01.png?resizew=231)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/231042cf-10e9-4cba-94e8-691bec64fa01.png?resizew=231)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-12-18更新
|
573次组卷
|
9卷引用:山西省运城市2019-2020学年高二上学期期中数学(理)试题
山西省运城市2019-2020学年高二上学期期中数学(理)试题陕西省西安市2019-2020学年高三上学期11月月考数学试题青海省西宁市第十四中学2019-2020学年高二上学期期中数学(理)试题2020届江西省高三上学期第二次大联考数学(理)试题2020届甘肃省白银市靖远县高三第一次联考数学(文)试题2020届甘肃省白银市靖远县高三第一次联考数学(理)试题(已下线)专题04 立体几何-2020年高三数学(理)3-4月模拟试题汇编山西省怀仁市第一中学云东校区2020-2021学年高二下学期第一次月考(入学考试)数学(理)试题(已下线)1.2.2 空间几何体的三视图-2020-2021学年高一数学课时同步练(人教A版必修2)
名校
5 . 点
是正方形
的中心,
是等边三角形,平面
平面
,
是线段
的中点,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/4/9297d794-0335-4ffd-8894-e42c5767281b.png?resizew=181)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a2357afc90ee9625e31484defac488e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/4/9297d794-0335-4ffd-8894-e42c5767281b.png?resizew=181)
A.![]() ![]() ![]() |
B.![]() ![]() ![]() |
C.![]() ![]() ![]() |
D.![]() ![]() ![]() |
您最近一年使用:0次
名校
6 . 已知正三棱锥
的正视图、侧视图和俯视图如图所示,则该正三棱锥侧面积是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/a477df77-14ee-4341-af1e-49aa84f064ef.png?resizew=202)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cdcf9b4b31f475bcc457cfcc088ee43.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/a477df77-14ee-4341-af1e-49aa84f064ef.png?resizew=202)
A.![]() | B.![]() |
C.18 | D.![]() |
您最近一年使用:0次
名校
解题方法
7 . 长方体
的底面
是正方形,点
在棱
上,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/4d296a9b-0e3d-4430-8f03-c6bfcf08af44.png?resizew=220)
(1)证明
平面
;
(2)若
,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd4cf99a0d5833beacc3a0ee39d39458.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eccf3f16946e0a89c4afe759f9bb6ed.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/4d296a9b-0e3d-4430-8f03-c6bfcf08af44.png?resizew=220)
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da2820419a936613a22e50ad552bebec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09fcdbb5f985233acdf8c1dabdab1d17.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/187a0886d2d2b2a53917dfb6cdadb89e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ef88fd342114c74b10ebf43e5d4c223.png)
您最近一年使用:0次
名校
解题方法
8 . 某几何体的三视图如图所示,则该几何体的体积为_________ .
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/2b6e80c9-49f4-4082-9d92-c59378ed1923.png?resizew=118)
您最近一年使用:0次
9 . 已知椭圆
的左、右焦点分别为
,过点
的直线
与椭圆
相切于点
,与
轴交于点
,又椭圆的离心率为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/b1a449cc-fa0c-4c34-84bc-ae258fa4aa94.png?resizew=209)
(1)求椭圆
的方程;
(2)圆
与直线
相切于点
,且经过点
,求圆
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/993769b494e12c21dff0ee7c53a4a49f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56286216c1c313e19f4a196fcaba6b29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/b1a449cc-fa0c-4c34-84bc-ae258fa4aa94.png?resizew=209)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
您最近一年使用:0次
名校
10 . 如图①所示,四边形
为等腰梯形,
,且
于点
为
的中点.将
沿着
折起至
的位置,使得平面
平面
,得到如图②所示的四棱锥
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/af2fd598-ef45-4147-b869-0285bfcbd60f.png?resizew=437)
(1)求证:
;
(2)求平面
与平面
所成的锐二面角的余弦值.
![](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/247e96a3a378741eb42dda3837ea5c7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc3814287dbb60d478bffc5366f9928b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/353732838789714499619085201305c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33719580ce50fafc3a27eb7039be8a97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6bfad3f7e65188bcf7f62ea5acdbf4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/decee6072217173778edc84db382f97b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/af2fd598-ef45-4147-b869-0285bfcbd60f.png?resizew=437)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c723ad583a4009b7a5dd515e7e02b8a.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a7f857869bc6084d128e8c13f5c115c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6bfad3f7e65188bcf7f62ea5acdbf4a.png)
您最近一年使用:0次