1 . 已知在正四面体
中,棱
的中点分别为
.
(1)若
,求
的面积;
(2)平面
将正四面体
划分成两部分,求这两部分的体积之比.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82802218706a07a4482876b25d0f8705.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41ff2c6b25b64159f7bf9737b3596f5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42c2d86d8daea5e652d99fe1c6bc3f9a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/613dedf2d90e58591b7ac4a250ac7b5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2f8b3d45ae1743416253d835c054456.png)
(2)平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82802218706a07a4482876b25d0f8705.png)
您最近一年使用:0次
2024·全国·模拟预测
2 . 已知椭圆
的离心率为
,且过点
.
(1)求椭圆
的方程.
(2)设
为椭圆
的左,右顶点,直线
过点
,且与椭圆
交于点
.若直线
斜率之和为
.求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dde742f8d39d13c13cf3124cf5aa329.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f38050bff1423963dca4c1e5f226a99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e4d7503a7d57ba242ad4e05c7006a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d0b6e554b56d9ed7f3e5de7e6bb925e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2024高三·全国·专题练习
解题方法
3 . 在长方体
中,
,
.
(1)在
边上是否存在点
,使得
,为什么?
(2)当存在点
,使
时,求
的最小值,并求出此时二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9c17aa542585738ca6e3e83127739be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
(1)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28815cb0aa427d7e44b48015e2f870e.png)
(2)当存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28815cb0aa427d7e44b48015e2f870e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cdcb0e56521b2690b7bbb84e4993245.png)
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2024·全国·模拟预测
名校
4 . 如图.在四棱锥
中,已知底面
为矩形,侧面
是正三角形,面
底面
,
是棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/28/14b8f045-1a15-418a-8853-543a766acd78.png?resizew=178)
(1)证明:
;
(2)若
,且二面角
的大小为
,求异面直线
与
所成角的正切值.
![](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/852aabd89edffc1b94344ff3f1f31ccd.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/28/14b8f045-1a15-418a-8853-543a766acd78.png?resizew=178)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90a52818f1e8b7c27f207abae182a64d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0a8e0c5bcf2d86726cd9f561b8ff5fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
您最近一年使用:0次
2024·全国·模拟预测
名校
解题方法
5 . 如图,四棱锥
中,底面
是平行四边形,
平面
,点
是
的中点,
分别是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/8/4ffa1eea-e765-4416-96b0-aca02b50c04e.png?resizew=166)
(1)求证:
;
(2)求三棱锥
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/3c893f51345fa193c688f4ce4fffdfe0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](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/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa834ab3fc4111e0c39c67b7b1541d96.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/8/4ffa1eea-e765-4416-96b0-aca02b50c04e.png?resizew=166)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7a772e2dea744532fd06fa33701fac3.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a54111e491768afe053bbb665a17a90c.png)
您最近一年使用:0次
2024·全国·模拟预测
名校
解题方法
6 . 已知双曲线C的中心为坐标原点,对称轴为坐标轴,点
在C上,点P与C的上、下焦点连线所在直线的斜率之积为
.
(1)求双曲线C的标准方程;
(2)经过点
的直线
与双曲线C交于E,F两点(异于点P),过点F作平行于x轴的直线
,直线PE与
交于点D,且
求直线AB的斜率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2007972af3341f27fbc32ce62dfce5e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3389f53711264b0acba3ba6019f8b908.png)
(1)求双曲线C的标准方程;
(2)经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/383f12cb70ca55eba4ff012771dbfa9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30fffe4e7a60b93192117607f494d15f.png)
您最近一年使用:0次
2024-01-06更新
|
1517次组卷
|
5卷引用:2024年普通高等学校招生全国统一考试数学预测卷(七)
(已下线)2024年普通高等学校招生全国统一考试数学预测卷(七)(已下线)专题12双曲线(3个知识点5个拓展2个突破8种题型5个易错点)-【倍速学习法】2023-2024学年高二数学核心知识点与常见题型通关讲解练(人教A版2019选修第一册)河南省郑州市郑州外国语学校2024届高三上学期适应性训练数学试题重庆市渝北中学校2023-2024学年高三下学期2月月考数学试题湖南省长沙市明德中学2023-2024学年高二下学期开学考试数学试卷
2024·全国·模拟预测
解题方法
7 . 如图1,已知
是边长为4的正三角形,D,E分别为线段AB,AC的中点,连接BE,将
沿DE翻折成四棱锥
,使得点
在底面BCED上的射影在线段BE上,如图2.
(1)求证:
;
(2)求四棱锥
的表面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede9e40f5cf450db6f01194559a19c7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/6/8c925a2a-2dc7-438e-93fe-6eae470d4f26.png?resizew=312)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bbf25292ff28709ea1511db9bdda525.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede9e40f5cf450db6f01194559a19c7e.png)
您最近一年使用:0次
8 . 如图,在四棱锥
中,底面
为梯形,平面
平面
,
,
,
是等边三角形,O,M分别为线段AB,PB的中点,且
,
.
(1)求证:
平面
;
(2)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/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de3595bb7c79503fabd75d99196ccb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/3/392ce3dd-5880-43b9-8b70-e2877e9b3ecd.png?resizew=161)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5865d488a9cf1181016fd2e866177cdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求多面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1b05fa47289b0164d51d9585464ce9a.png)
您最近一年使用:0次
9 . 如图,在三棱锥
中,△
是边长为
的正三角形,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/7/27fbec8e-05ed-4c41-9ec5-cda0bfbca20f.png?resizew=159)
(1)求证:平面
平面BCD;
(2)若点E在棱BC上,且
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70c2888dad200ebe6cbc60b7a680ad6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f01c4faacedfe56f5127d6c0cc63cf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/7/27fbec8e-05ed-4c41-9ec5-cda0bfbca20f.png?resizew=159)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf6dc837ae85207789b94d109c5c2eb.png)
(2)若点E在棱BC上,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bffd657e48b15b9b54a55817e2c26b22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52753d89bf58589e2e83b19bd3d140b8.png)
您最近一年使用:0次
2024·全国·模拟预测
解题方法
10 . 如图,在三棱锥
中,点E,F,G,H分别在棱
,
,
,
上.
为平行四边形,证明:
平面
;
(2)若E,F,G,H均为所在棱的中点,三棱锥
的体积为
,多面体
的体积为
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab8099c774a6ae6dd98712b0b90b60cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
(2)若E,F,G,H均为所在棱的中点,三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54e84508decfcce6d2fcbe6c8c1a92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cfd4b688b05e936f1cbec77112ae1d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4764374bd2fb78e59cd0b283637baeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b659b8d1661a7757a46337bc1fb9860.png)
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