1 . 如图所示,以原点
为圆心,分别以2和1为半径作两个同心圆,设
为大圆上任意一点,连接
交小圆于点
,设
,过点
分别作
轴,
轴的垂线,两垂线交于点
.
(1)求动点
的轨迹
的方程;
(2)点
分别是轨迹
上两点,且
,求
面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45b6c260ac4010a7857457eabcb91192.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/24/be09970c-aa4a-4867-aaab-836cf48ac869.png?resizew=159)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d30145021aabb04c9e730b8b356bb69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b14aeac55d519010de23642ac22cfb0b.png)
您最近一年使用:0次
2023-09-23更新
|
708次组卷
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5卷引用:福建省厦门集美中学2023-2024学年高二上学期12月月考数学试卷
福建省厦门集美中学2023-2024学年高二上学期12月月考数学试卷四川省南充市2024届高三高考适应性考试(零诊)文科数学试题四川省南充市2024届高三高考适应性考试(零诊)理科数学试题(已下线)重难点突破17 圆锥曲线中参数范围与最值问题(八大题型)湖南省岳阳市第一中学2023-2024学年高三下学期开学考试数学试题
2 .
为抛物线
的弦,
,
分别过
作的抛物线的切线交于点
,称
为阿基米德三角形,弦
为阿基米德三角形的底边.若弦
过焦点
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c2f156b05838deaae6a35acad242af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3511cdc6a9b56bc1d9415d3d94ef0f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4b0c4b339f44bbac0e275eb0718234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
A.![]() |
B.底边![]() ![]() |
C.![]() |
D.![]() ![]() |
您最近一年使用:0次
2023-09-16更新
|
706次组卷
|
3卷引用:福建省厦门市厦门大学附属科技中学2024届高三上学期10月月考数学试题
福建省厦门市厦门大学附属科技中学2024届高三上学期10月月考数学试题湖南省长沙市周南中学2023-2024学年高三上学期第二次阶段性测试数学试题(已下线)专题17 圆锥曲线常考压轴小题全归类(16大核心考点)(讲义)
3 . 抛物线
交
轴于
,
两点,与
轴交于点
,连接
,
.
为线段
上的一个动点,过点
作
轴,交抛物线于点
,交
于点
.
(1)求抛物线的表达式;
(2)设
点的坐标为
,请用含
的代数式表示线段
的长,并求出当
为何值时,
有最大值,最大值是多少?
(3)试探究点
在运动过程中,是否存在这样的点
,使得以
为顶点的三角形是等腰三角形,若存在,请直接写出此时点
的坐标;若不存在,请说明理由.
(4)在(2)的条件下,直线
上有一动点
,连接
,将线段
绕点
逆时针旋转
度,使点
的对应点
恰好落在该抛物线上,直接写出点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90731f6d4190300b33385ce70eb2783a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a18a7caa080988802ba1145b4fe4203.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316ba5cbb31299d683ac6c7dd795db85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea3a3db6d96518255f96ad7fc1ac98f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/17/5ba93605-d185-4d25-97f1-868993619271.png?resizew=168)
(1)求抛物线的表达式;
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b62769b7177ef4bc952dc1dd51d6b510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
(3)试探究点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/557efcd952a41e4a2ed82928445429cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(4)在(2)的条件下,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25b2e7aa38de090bb39fa058323d2eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25b2e7aa38de090bb39fa058323d2eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a17161b28b6ad8f57abc5b11e1b6c671.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
您最近一年使用:0次
4 . 若一个点从三棱柱下底面顶点出发,一次运动中随机去向相邻的另一个顶点,则在5次运动后这个点仍停留在下底面的概率是______ .
您最近一年使用:0次
2023-09-09更新
|
1627次组卷
|
11卷引用:福建省名校联盟2023届高三高考模拟考试4月数学试题
福建省名校联盟2023届高三高考模拟考试4月数学试题(已下线)阶段性检测4.3(难)(范围:高考全部内容)广东省东莞市众美中学2024届高三上学期10月检测数学试题(已下线)第四节 事件的相互独立性与条件概率、全概率公式 B卷素养养成卷 一轮复习点点通(已下线)第七节 二项分布、超几何分布与正态分布 一轮点点通(已下线)第04讲 随机事件、频率与概率(六大题型)(讲义)(已下线)第06讲 事件的相互独立性、条件概率与全概率公式(七大题型)(讲义)(已下线)模块二 专题4 条件概率与全概率的应用问题(已下线)大招1 条件概率与全概率公式&贝叶斯公式(已下线)【讲】 专题五 概率与数列的交汇问题(压轴大全)甘肃省天水市第一中学2023-2024学年高二下学期第二学段检测考试(6月)数学试题
名校
解题方法
5 . 半圆形量角器在第一象限内,且与
轴、
轴相切于
、
两点.设量角器直径
,圆心为
,点
为坐标系内一点.下列选项正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/29/49552981-aff2-45ae-b257-733481950124.png?resizew=154)
A.![]() ![]() | B.![]() |
C.![]() | D.若![]() ![]() |
您最近一年使用:0次
2023-09-09更新
|
988次组卷
|
2卷引用:福建省名校联盟2023届高三高考模拟考试4月数学试题
名校
6 . 已知函数
定义域为
,
是奇函数,
,
,
分别是函数
,
的导函数,函数
在区间
上单调递增,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e81e15b871dd32b2438ef8025bcc42d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a4343f10c051cab3f0522ccbaae21a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22add663bd26e87d972a10dc5fd9ada1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be381da62d4a042476aa11dbd5824e8d.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2023-09-07更新
|
555次组卷
|
4卷引用:福建省厦门市厦门大学附属科技中学2024届高三上学期10月月考数学试题
7 . 在一次数学活动课上,老师要求同学们画15°、30°和60°角,小强同学身旁没有量角器,也没有圆规、三角尺,他灵机一动,想到了折纸的办法:他拿出一张矩形纸片
,先对折使
与
重合,如图一,得到折痕
,把纸片展平,再一次折叠纸片
,使点
落在
上的
处,并使折痕经过点
,得到折痕
和线段
.
(1)请直接写出
的度数,并说明理由;
(2)在图一的线段
上取一点
,将
沿着直线
折叠,如图二,使得
点恰好落在线段
上,求
;
(3)若
为
边上一点,如图三,将
沿直线
折叠,
的对应点为
,延长
交
边于点
,延长
交
边于点
,连接
.
①若
,当
时,若存在唯一的点
,使得四边形
为平行四边形,求
的值;
②在①的条件下,若
为线段
上一动点,如图四,连接
,取线段
的中点
,连接
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/8/dc966f24-8ff2-417d-8670-e6f8bdae0cfc.png?resizew=175)
(1)请直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d76e136e7df3692ae6536fc70b6961a9.png)
(2)在图一的线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1028cdd34b2ec5e663dd1f8092a32a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ad8115387158c8dda205d26968ba11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28df0b35b6afe90dcba33b09a4b9b13f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/8/8ec36c3e-4d2b-4248-adbb-853570f3befb.png?resizew=172)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a5e0a51c9e14fb246b0ba0b231c1e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](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/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/8/b3f6d92f-b8d9-4863-b6f5-1fb877d0ef77.png?resizew=160)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f6197e055a0bc8a2a0c1414026e6fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cc3dcc4325297dac77a92c0682a6cad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8412a577b2368392d634250d43c57f3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
②在①的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e4fa04825ac7d071968056322d88be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e4fa04825ac7d071968056322d88be.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/8/20dac818-63b8-481e-8185-afa70ca936de.png?resizew=160)
您最近一年使用:0次
2023-09-07更新
|
28次组卷
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2卷引用:福建省宁德市第五中学2023-2024学年高一上学期学生学科素养测试数学试题
名校
8 . 已知
的顶点
在圆
上,顶点
在圆
上.若
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5dd7e620931182926313c68229a3be9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79382ba44ba669b5d43fdd5427adf16c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84cef568cfe2fc12a4dec11533ada274.png)
A.![]() ![]() |
B.直线![]() ![]() ![]() |
C.有且仅有一个点![]() ![]() |
D.有且仅有一个点![]() ![]() ![]() ![]() |
您最近一年使用:0次
2023-08-31更新
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1952次组卷
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8卷引用:福建省泉州市2024届高三高中毕业班质量监测(一)数学试题
福建省泉州市2024届高三高中毕业班质量监测(一)数学试题重庆市南开中学校2023-2024学年高二上学期9月测试数学试题湖南省永州市第一中学2023-2024学年高二上学期9月月考数学试题广东省东莞市众美中学2024届高三上学期10月检测数学试题(已下线)考点08 相离的位置关系(直线与圆,圆与圆) 2024届高考数学考点总动员广东省深圳市翠园中学2023-2024学年高二上学期期中数学试题广东省江门市广雅中学2023-2024学年高二上学期期中数学B卷试题(已下线)第二章 直线与圆的方程【单元基础卷】-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(人教A版2019选择性必修第一册)
名校
解题方法
9 . 在棱长为2的正方体
中,点N满足
,其中
,
,异面直线BN与
所成角为
,点M满足
,则下列选项正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b73059be0b81098c18b863673f27302b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f7dbb416ec1ff1984a724a4f48bf692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b59387e75e13dce643d327893df0edfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037fb348109dc2063a268b10eb925a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9e9a0de9b054cc71c94fdc03759607a.png)
A.![]() |
B.![]() |
C.当线段MN取最小值时,![]() |
D.当![]() ![]() |
您最近一年使用:0次
2023-08-20更新
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999次组卷
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3卷引用:福建省龙岩市2022-2023学年高二下学期期末教学质量检查数学试题
名校
10 . 已知正四面体
的棱长为2,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
A.正四面体![]() ![]() |
B.正四面体![]() |
C.正四面体![]() ![]() |
D.正四面体![]() ![]() ![]() ![]() |
您最近一年使用:0次
2023-08-20更新
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1296次组卷
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9卷引用:福建省厦门第一中学海沧校区2024届高三上学期9月月考数学试题
福建省厦门第一中学海沧校区2024届高三上学期9月月考数学试题湖北省高中名校联盟2024届高三上学期第一次联合测评数学试题(已下线)江苏省南通市如皋市2023-2024学年高三上学期9月诊断测试数学试题广东省南澳县南澳中学2024届高三上学期校一模数学试题广东省广州市2024届高三上学期8月阶段训练数学试题(已下线)考点17 立体几何中的定值问题 2024届高考数学考点总动员【练】江苏省苏州市部分学校2024届高三上学期第二次调研考试数学试题山东省菏泽市单县湖西高级中学北校区2024届高三上学期期末仿真训练数学试题河南省安阳市林州市第一中学2024届高三上学期期末数学试题