名校
1 . 已知
为
的切线,
与
交于
,弦
经过点
.求证:
平分
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2891b18eef907a1aa06c0920a5a6bc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/091e86ca89e484b331fd90125a5e5af3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb686e4f5e3938575bc547e849d5513f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/11/7f2a1ea6-c457-4c35-b9a6-550171c095e0.png?resizew=195)
您最近一年使用:0次
2023-05-20更新
|
73次组卷
|
2卷引用:安徽省蚌埠第二中学2020-2021学年高一上学期自主招生考试数学试题
2 . 射影几何的奠基人之一,法国数学家庞斯莱(1788-1867)发明过一种玩具,如图,这种玩具用七根小棍做成,各个连接点均可活动.
与
等长,
,
,
,
等长,并且
,使用时,将
,
钉牢在平板上,并使
,
间的距离等于木棍
的长,绕点
转动
点,则点
在一个圆上运动,
点就会在一条直线上运动.这样一边画圆一边画直线据此可设计出“狗熊走钢丝”等好玩的游戏.问题探究:爱玩的小明看到这段材料,就想用数学家制作的这个玩具玩一把,可是身边没有这个玩具,怎么办呢?想了又想,最后他想用几何画板来模拟这个玩具,于是,他用几何画板构造了如图所示的“玩具”,在电脑上玩了起来,确实发现当点
在
上运动时,点
在一条直线上动,而且与
垂直,垂足为
,怎么来说明这个结论呢?小明百思不得其解时,聪明的考生请你帮帮小明.问题解决:
(1)求证:
,
,
在一条直线上;
(2)求证:点
在一定直线上运动.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735056c174e8dd7906257a2a50a962a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a18dce5b1ca910207af8732016ec12.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6f6558fef858bf27e9811c2d9426fe7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/11/9dc97072-e1b3-4222-81bc-ebe0a67bf84d.png?resizew=168)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)求证:点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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名校
3 . 设
为素数,记
,试问当
时,
能否作为三角形的三边长?证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c95bc37a7233a19647e7ce04eff895b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc3d0859808167258a79582368a80dd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
您最近一年使用:0次
名校
4 . (1)已知实数
满足
,试证明:
.(
为正整数,且
)
(2)试解下列方程:①![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e2c957ac162bcbf3aae7a1fb4f02d42.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f03cab451843012fd80fa6cc698c648.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be38ce4a1f2c70f89bab1fa69ea865c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c62fe4fc561a8acb6fbd3b5ab9111e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
(2)试解下列方程:①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e2c957ac162bcbf3aae7a1fb4f02d42.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df763850c296d063d66730bbef10e4e.png)
您最近一年使用:0次
5 . 已知
为正整数.
(1)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e881a784e2b5216ba5562e07c4553a4e.png)
不能 表示为两个以上连续整数的乘积;
(2)若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e881a784e2b5216ba5562e07c4553a4e.png)
能 表示为两个连续整数的乘积,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e881a784e2b5216ba5562e07c4553a4e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e881a784e2b5216ba5562e07c4553a4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2023-02-15更新
|
159次组卷
|
2卷引用:安徽省芜湖市第一中学2019-2020学年高一理科实验班自主招生数学试卷
6 . 已知
都是正实数,且
.
(1)证明:
必在
和
之间;
(2)请问:
和
这两个数,哪一个更接近于
,说明你的理由;
(3)请你再写出一个式子,使得它的值比
和
的值更接近于
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b39ad04a78e7320dfb3c2580038cff38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3040f7e4e03a1a0a3449b89de5e2bccd.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a507c062709cfe2f218896247461c7d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb8b95ed19aea7c9641804b19966a0fd.png)
(2)请问:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a507c062709cfe2f218896247461c7d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb8b95ed19aea7c9641804b19966a0fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
(3)请你再写出一个式子,使得它的值比
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a507c062709cfe2f218896247461c7d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb8b95ed19aea7c9641804b19966a0fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
您最近一年使用:0次
7 . 如图1,设是一个锐角三角形,且
,
为其外接圆,
分别为其外心和垂心,
为圆
直径,
为线段
上一动点且满足
.
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/186354626d5a1d13b88dfb4df916947b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f8110f7184b98a7e288482b367eacf7.png)
(3)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8a1c30664a4ae2b7e7667af029cf40f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06d88efcc306102497629dec0a867b5d.png)
您最近一年使用:0次
名校
8 . 已知
为锐角
的高,
为
中点,
于点
,延长
至
,使得
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/20/251ad998-628d-454f-80c5-258fbecb0d07.png?resizew=161)
(1)证明:
;
(2)证明:
;
(3)若
,求四边形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c65edad25ddd666cdce0d7e5afefc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0792d20f1b18cc0367c8a3ce5492296.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/20/251ad998-628d-454f-80c5-258fbecb0d07.png?resizew=161)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/023bbaa6d993d5653a70ef88342daabe.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26910bb351f9cc7a34b1b69944c6d8b8.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61fbda9345c1cb562da40da144ca834d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61510c34c5795d7261569b4d09098271.png)
您最近一年使用:0次