如图,在扇形
中,
,
,点
、
是弧
上的动点(点
在点
的上方,点
不与点
重合,点
不与点
重合),且
.
、弧
和弧
之间的数量关系;
②分别连接
、
和
,试比较
和
的大小关系,并证明你的结论;
(2)
分别交
、
于点
、
.
①当点
在弧
上运动过程中,
的值是否变化,若变化请说明理由;若不变,请求
的值;
②当
时,求圆心角
的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e64ba6e46cfd82c3bddc9a9fbfc554f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ccc37b189fa2cbc269ca0b233dac37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b51630723c81c43652cac2d31c6f4a16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
②分别连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad4d1abc5c329a579f132c5cb97f2351.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
①当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f56c4bde8243588046f208c2e06f74c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f56c4bde8243588046f208c2e06f74c.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6609cc372831939ad4beb3770b0b0ca8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bea7b811fa609b8e92da877471564e07.png)
2024·上海徐汇·二模 查看更多[2]
更新时间:2024-05-12 17:52:06
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相似题推荐
解答题-证明题
|
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【推荐1】阿基米德是有史以来最伟大的数学家之一,他与牛顿、高斯并称为三大数学王子,在后世的译文中保存了阿基米德折弦定理的内容.前苏联在1964年根据阿尔·比鲁尼本出版了俄文版《阿基米德全集》,第一题就是阿基米德的折弦定理.
【定理内容】一个圆中一条由两长度不同的弦组成的折弦所对的两段弧的中点在较长弦上的射影,就是折弦的中点.
【定理模型】如图①,已知AB和BC是
的两条弦(即折线ABC是
的一条折弦),
,M是
的中点,那么从M向弦BC作垂线的垂足D是折弦ABC的中点,即
.
下面是运用“补短法”证明
的部分证明过程:
如图②,延长DB至点F,使
,连接MF,AB,MC,MA,AC,…
【定理证明】按照上面思路,写出剩余部分的证明过程.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/17/129999ca-9f90-44f3-ab4a-5ec7c5a8b61b.png?resizew=533)
【问题解决】如图③,
内接于
,已知
,D为
上一点,连接AD,DC,
,
,求
的周长.
【定理内容】一个圆中一条由两长度不同的弦组成的折弦所对的两段弧的中点在较长弦上的射影,就是折弦的中点.
【定理模型】如图①,已知AB和BC是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7c4e3cf5aa65a81a357c97a6b7ee5d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0ff808cf596294204a404d0a34f3e3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d89e3e03158b56e714b771115443660d.png)
下面是运用“补短法”证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d89e3e03158b56e714b771115443660d.png)
如图②,延长DB至点F,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6961ff0c507e6c21ee3af44e887c8c9.png)
【定理证明】按照上面思路,写出剩余部分的证明过程.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/17/129999ca-9f90-44f3-ab4a-5ec7c5a8b61b.png?resizew=533)
【问题解决】如图③,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c2e679d7b314ff58c284da08e8edbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b03bf58cba56d1b98a8a457982870b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ffff38ea8b2d25cc4388774f1fdecbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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【推荐2】(1)如图1,已知:在
ABC中,∠BAC=90°,AB=AC,直线m经过点A,BD⊥直线m,CE⊥直线m,垂足分别为点D、E. 证明:DE=BD+CE.(提示:由于DE=AD+AE,证明AD=CE,AE=BD即可)
(2)如图2,将(1)中的条件改为:在
ABC中,AB=AC,D、A、E三点都在直线m上,并且有∠BDA=∠AEC=∠BAC=
,其中
为任意钝角,请问结论DE=BD+CE是否成立?如成立,请你给出证明;若不成立,请说明理由.
(3)如图3,D、E是D、A、E三点所在直线m上的两动点(D、A、E三点互不重合),点F为∠BAC平分线上的一点,且
ABF和
ACF均为等边三角形,连接BD、CE,若∠BDA=∠AEC=∠BAC,试证明
DEF是等边三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
(2)如图2,将(1)中的条件改为:在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(3)如图3,D、E是D、A、E三点所在直线m上的两动点(D、A、E三点互不重合),点F为∠BAC平分线上的一点,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/8/d833f0a2-450f-4d1c-a43f-7e4fb7ad867f.png?resizew=524)
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【推荐1】如图,四边形
内接于以
为直径的圆,圆心为
,且
,延长
、
交于
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/c81642a8-b7a0-4d36-95e9-729fe90d3d44.png?resizew=213)
(1)求证:
;
(2)过
点作
的垂线交
的延长线于
,且
.
①求线段
的值;
②若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/c81642a8-b7a0-4d36-95e9-729fe90d3d44.png?resizew=213)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3caa6651e232f5eb5d73721142f3d9de.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d5ede22c2d8d7cea254b04a7ef5206.png)
①求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf651673b9aea4b8cd964d5bf7b05a8.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6f75e575cbfaea176d9fc9a019c0426.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
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【推荐2】在锐角
中,
,
为
边上的高,
为
中点.
![](https://img.xkw.com/dksih/QBM/2021/9/6/2802337820844032/2803027726376960/STEM/18209c406e4b4341b2779214a1ce4565.png?resizew=249)
(1)如图1,过点
作
于
点,连接
.若
,求
的度数;
(2)若
为线段
上的动点(点
与点
不重合),过点
作
于
点,射线
,
交于
点.
①依题意将图2补全;
②探究
与
的数量关系,并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/2021/9/6/2802337820844032/2803027726376960/STEM/18209c406e4b4341b2779214a1ce4565.png?resizew=249)
(1)如图1,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e68633cbbe3cc2d0801305f81a7aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/115d56f2dca3e53ef6db9761cfef7f6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13a2e6494cf8d2dff0746a9bb72cef43.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea6a116aada0941f623b7ad78ba24a1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c4c865445dda4a59b6d5cb18fd74404.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
①依题意将图2补全;
②探究
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ffcf0b442d5ff2ce8efa1a778b4ecd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94d2506539ad8760cf7ed366c0c537c.png)
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【推荐1】如图,
是线段
上一动点,分别以
、
为边作等边
.等边
,连接
、
分别交
、
于
、
两点.
;
(2)判断直线
与
的位置关系;
(3)若
,当点
在
上运动时,是否存在一个位置使
的长最大?若存在请求出此时
的长以及
的长.若不存在请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6a783e5ffcf7a4ea9e531ea76199487.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc12fd638cffc9d0f1daf001b405eec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe8bafd5532e939776e502cd27868a4.png)
(2)判断直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa29fe6cd9eb51c184f6299d437375cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77847ba0afc18466b17cea483eb29cdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa29fe6cd9eb51c184f6299d437375cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa29fe6cd9eb51c184f6299d437375cb.png)
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【推荐2】如图,直线y=﹣
x+1与x轴,y轴分别交于A,B两点,抛物线y=ax2+bx+c过点B,并且顶点D的坐标为(﹣2,﹣1).
![](https://img.xkw.com/dksih/QBM/2020/2/3/2390874967900160/2391279896535040/STEM/29827fa4ae21405786d3559a1bf8c9b4.png?resizew=462)
(1)求该抛物线的解析式;
(2)若抛物线与直线AB的另一个交点为F,点C是线段BF的中点,过点C作BF的垂线交抛物线于点P,Q,求线段PQ的长度;
(3)在(2)的条件下,点M是直线AB上一点,点N是线段PQ的中点,若PQ=2MN,直接写出点M的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/2020/2/3/2390874967900160/2391279896535040/STEM/29827fa4ae21405786d3559a1bf8c9b4.png?resizew=462)
(1)求该抛物线的解析式;
(2)若抛物线与直线AB的另一个交点为F,点C是线段BF的中点,过点C作BF的垂线交抛物线于点P,Q,求线段PQ的长度;
(3)在(2)的条件下,点M是直线AB上一点,点N是线段PQ的中点,若PQ=2MN,直接写出点M的坐标.
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解答题-问答题
|
较难
(0.4)
真题
【推荐3】如图1,一次函数y=﹣x+b与反比例函数
(k≠0)的图象交于点A(1,3),B(m,1),与x轴交于点D,直线OA与反比例函数
(k≠0)的图象的另一支交于点C,过点B作直线l垂直于x轴,点E是点D关于直线l的对称点.
![](https://img.xkw.com/dksih/QBM/2018/2/7/1877059476611072/1889706451288064/STEM/bc5931d8ffad496fae385889b296994a.png?resizew=455)
(1)k= ;
(2)判断点B、E、C是否在同一条直线上,并说明理由;
(3)如图2,已知点F在x轴正半轴上,OF=
,点P是反比例函数
(k≠0)的图象位于第一象限部分上的点(点P在点A的上方),∠ABP=∠EBF,则点P的坐标为( , ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://img.xkw.com/dksih/QBM/2018/2/7/1877059476611072/1889706451288064/STEM/bc5931d8ffad496fae385889b296994a.png?resizew=455)
(1)k= ;
(2)判断点B、E、C是否在同一条直线上,并说明理由;
(3)如图2,已知点F在x轴正半轴上,OF=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
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解答题-证明题
|
较难
(0.4)
解题方法
【推荐1】将两块全等的三角板如图①摆放,其中
,
.
![](https://img.xkw.com/dksih/QBM/2021/5/13/2720380719030272/2731317539078144/STEM/698723ab-86f9-4e47-acc7-3dea46d4c502.png)
(1)将图①中的
顺时针旋转后得到图②,点
是
与
的交点,点
是
与
的交点.若
,请判断
的形状,并说明理由;
(2)将图①中的
顺时针旋转45°得图③,点
是
与
的交点,点
是
与
的交点,求证:
;
(3)在(2)的条件下,如图④,在
上取一点
,连接
、
,设
,当
时,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1548b19858f612eb54de22d3417b80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb6a09c3c0c0fd2aaded7a778576e7e0.png)
![](https://img.xkw.com/dksih/QBM/2021/5/13/2720380719030272/2731317539078144/STEM/698723ab-86f9-4e47-acc7-3dea46d4c502.png)
(1)将图①中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2f73e4d0557ca664d1edd70b7275667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc2854df1e5314734576891b8372a9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08fa5b7ee3c02add5668fcdfd13e4b6f.png)
(2)将图①中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2f73e4d0557ca664d1edd70b7275667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/378ab247cf28dd1b17d48a508fa92176.png)
(3)在(2)的条件下,如图④,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1f4f255d191786f7d330d278868c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca9502482ff9df5b1ca52304cd4783bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68ae0df0b9934dd820e797e501e7074b.png)
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解答题-作图题
|
较难
(0.4)
【推荐2】如图,在每个小正方形的边长为1的网格中,
的顶点
,
,
均落在格点上,点
是
的中点.请用无刻度的直尺,在如图所示的网格中按要求作图.
上找一点
,使得
;
(2)在图②
上找一点
使得
;
(3)在图③
上找一点
使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82ffb6e2321c9caeeb0f1daf8c496f2a.png)
(2)在图②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/871265238336f48725251c1c760792b2.png)
(3)在图③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff464d5343f20886295cb6c5419c3ecb.png)
您最近一年使用:0次