名校
解题方法
1 . 已知空间直角坐标系
中,
同在球F的球面上,则下列结论中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e336d6ca2cae3d6e6c3810d7e521a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db76e23ddfd73a8f3ebe01f00f90f640.png)
A.![]() ![]() |
B.球F的表面积为![]() |
C.E点的轨迹长度为![]() |
D.球的弦![]() ![]() |
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解题方法
2 . 如图,四棱锥
中,
底面
,底面
是边长为6的正方形,且四棱锥
的外接球的表面积为
,点
在线段
上,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d05361ceee5939e8b67623ab6f7c3a81.png)
为线段
的中点,则点
到直线
上任意点的距离的最小值为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fec35c2182c5e0c80b766adceb058e5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/000a5d60075d7f1b9471cb12c18ebecc.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/fec35c2182c5e0c80b766adceb058e5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2115e47d133c662a6416c1945fbb823.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d05361ceee5939e8b67623ab6f7c3a81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/11/31651034-7138-40e0-a720-daa21a2cc6ec.png?resizew=146)
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解题方法
3 . 如图,正方体
的棱长为
是棱
的动点,则下列说法正确的( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/77441c7e-9500-4c1d-84ea-33fdbee3a98f.png?resizew=158)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d362c11740a95c6d7a5250a72bccc71d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/77441c7e-9500-4c1d-84ea-33fdbee3a98f.png?resizew=158)
A.若![]() ![]() ![]() ![]() |
B.三棱锥![]() ![]() |
C.为![]() ![]() ![]() ![]() |
D.过点![]() ![]() |
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名校
4 . 如图,多面体
由两个完全相同的四棱锥底面重合拼接而成,它们的公共底面
为矩形,四边形
为平行四边形,
,
,
为棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/26/253a527d-645e-4d26-8f96-a81f854ee399.png?resizew=160)
(1)求证:
平面
;
(2)若该多面体体积为4,求直线
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f84f169e50dc59d4f7a8e1e36f5c847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66727fa0701837385c37508fff1f5c33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02b6d19fedaf8488f9637cd64efbca83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/26/253a527d-645e-4d26-8f96-a81f854ee399.png?resizew=160)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31c34b18525831f3eda7bb90be0199b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc46688d8723cf2003fc25890265200.png)
(2)若该多面体体积为4,求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc46688d8723cf2003fc25890265200.png)
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5 . 已知边长为
的正方体
,点
为
内一个动点,且满足
,则点
的轨迹长度为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7988923407b9abb78ef8ab45829678fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c29deb5f6aede4d409f39584955bfa40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 如图,在底面是直角三角形的直三棱柱
中,P是
的中点,
,
,若平面
过点P,且与
平行,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/736d8bcc-580e-441f-8b24-47a0ccc5a80c.png?resizew=112)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209acf15985d1ea1ad86fc4a37e38c0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/736d8bcc-580e-441f-8b24-47a0ccc5a80c.png?resizew=112)
A.异面直线![]() ![]() |
B.三棱锥![]() ![]() ![]() |
C.当平面![]() ![]() ![]() |
D.当平面![]() ![]() ![]() |
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7 . 在如图所示的多面体
中,四边形
为菱形,且
为锐角.在梯形
中,
,
,
,平面
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/22/861d031b-959d-4365-90bc-a18cd4852d5f.png?resizew=169)
(1)证明:
平面
;
(2)若
,
,是否存在实数
,使得直线
与平面
所成角的正弦值为
,若存在,则求出
,若不存在,说明理由.
![](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/3981e7286d41960daf4e110c1c84e03a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72c766942d554e7f15ffec6eaacbe0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ad6f8846d4294ae3789a6ddd17af5b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3e1d5146233a1c02370bea48615429b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c674dc5024374f53920947c4cf4baf11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/22/861d031b-959d-4365-90bc-a18cd4852d5f.png?resizew=169)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5928c98b341b16d4b5a5b931d2929d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4734735213b599a9915e1ed91a5d8ce4.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d95c012832942c0cd609d3336e65c5b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0308cc1a7f14de3c75a46adca856ccda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6261790c66cc71ee3898afabad0c09f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaa42621cd6793e7f3673fdb49bc3123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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8 . 如图,圆锥的顶点为P,底面圆心为
.点A,B,M是底面圆周上三个不同的点,且
.已知
,则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/19/57b742eb-c33b-4e24-bdb4-68f686fb012f.png?resizew=142)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36255578eee7d5980cd1f14fec45d77a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/19/57b742eb-c33b-4e24-bdb4-68f686fb012f.png?resizew=142)
A.三棱锥![]() ![]() |
B.当![]() ![]() ![]() |
C.存在点M,使得直线![]() ![]() |
D.当直线![]() ![]() ![]() ![]() |
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9 . 在正三棱柱
中,
,动点P在棱
上,则点P到平面
的距离为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af0e44cb429eea46e7ee4320147192b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afac7c616bbb14e1ed428a3c507c7dc.png)
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解题方法
10 . 宋元时期,泉州作为海洋商贸中心,成为世界第一大港.作为海上丝绸之路的起点,泉州的海外贸易极其频繁,但海上时常风浪巨大,使用原始船出行的风险也大.因此,当时的设计师为了海外贸易的正常进行,便在船只设计中才用了楔形零件结构,由此海上出行无需再惧怕船体崩溃,这也为海上贸易的发达作出了巨大贡献,而其智慧至今仍熠熠生辉.如图是从棱长为3的正方体木块中截出的一个楔形体ABCD
MNPQ,将正方体的上底面平均分成九个小正方形,其中
是中间的小正方形的顶点.
(2)求平面APQ与平面
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b700fa9aeb1016aa71f76e4b6bb212e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34bbfb6436cdda3be72735316cb54cd4.png)
(2)求平面APQ与平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/820ffc2ac7c01b2873f69ce777e14026.png)
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