综合与实践
数学活动课上,同学们开展了以折叠为主题的探究活动,如图1.已知矩形纸片
,其中
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/7/0d08c9cb-bfa9-44d4-afa6-779fa465aaf7.png?resizew=418)
(1)操作判断
将矩形纸片
按图1折叠,使点
落在
边上的点
处,可得到一个
的角,请你写出一个
的角.
(2)探究发现
将图1的纸片展平,把四边形
剪下来如图2,取
边的中点
,将
沿
折叠得到
,延长
交
于点
,判断
的周长是否为定值,若是,求出该定值;若不是,请说明理由.
(3)拓展应用
改变图2中点
的位置,令点
为射线
上一动点,按照(2)中方式将
沿
折叠得到
,
所在直线交
于点
,若点
为
的三分点,请直接写出此时
的长.
数学活动课上,同学们开展了以折叠为主题的探究活动,如图1.已知矩形纸片
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc89dbda86a8c05e4fb4aa46c642b303.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/7/0d08c9cb-bfa9-44d4-afa6-779fa465aaf7.png?resizew=418)
(1)操作判断
将矩形纸片
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
(2)探究发现
将图1的纸片展平,把四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e41c2d7ae6aaf6d91129ed5221a415a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735056c174e8dd7906257a2a50a962a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68d65ed39a9dfd09c5b907b5de6b144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b46c607b3deac746c0ef3389ad8f65c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73c8f5ba45ee757675b708a3b9bc3c2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3184cd468586362043f15d3964991725.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c0e1c17a2c9feaa4bd0639ffaa19f9.png)
(3)拓展应用
改变图2中点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735056c174e8dd7906257a2a50a962a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68d65ed39a9dfd09c5b907b5de6b144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b46c607b3deac746c0ef3389ad8f65c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73c8f5ba45ee757675b708a3b9bc3c2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3184cd468586362043f15d3964991725.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9be7fa11b9444524663354ed84792e73.png)
2023·河南南阳·一模 查看更多[3]
2023年河南省南阳市邓州市中考一模数学试题(已下线)专题03正方形的性质与判定(3个知识点8种题型1个易错点中考2种考法)-【帮课堂】2023-2024学年九年级数学上册同步学与练(北师大版) (已下线)2023年河南省一模(几何综合1)
更新时间:2023-05-04 19:25:09
|
相似题推荐
解答题-证明题
|
较难
(0.4)
【推荐1】如图,已知CD是线段AB的垂直平分线,垂足为D,C在D点上方,∠BAC=30°,P是直线CD上一动点,E是射线AC上除A点外的一点,PB=PE,连BE.
(1)如图1,若点P与点C重合,求∠ABE的度数;
(2)如图2,若P在C点上方,求证:PD+
AC=CE;
(3)若AC=6,CE=2,则PD的值为 (直接写出结果).
(1)如图1,若点P与点C重合,求∠ABE的度数;
(2)如图2,若P在C点上方,求证:PD+
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(3)若AC=6,CE=2,则PD的值为 (直接写出结果).
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/12/4987312f-2cab-4002-9246-2a210dba2cda.png?resizew=556)
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【推荐2】已知,如图1,AB⊥BD于B,ED⊥BD于D,点C在直线BD上且与F重合,AC=EF,BC=DE .
(1)请说明△ABC≌△FDE,并判断AC是否垂直FE?
(2)若将△ABC 沿BD方向平移至如图2的位置时,且其余条件不变,则AC是否垂直FE?请说明为什么?
(1)请说明△ABC≌△FDE,并判断AC是否垂直FE?
(2)若将△ABC 沿BD方向平移至如图2的位置时,且其余条件不变,则AC是否垂直FE?请说明为什么?
![](https://img.xkw.com/dksih/QBM/2018/10/12/2051874622570496/2052168524554240/STEM/c7c29bd2fe704fbea0db77a52e4377ef.png?resizew=256)
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【推荐1】如图,在△ABC中,∠C=90°,把△ABC沿直线DE折叠,使△ADE与△BDE重合.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/04cbc44c-1812-4de1-86b8-3b0144c1f54b.png?resizew=200)
(1)若∠A=35°,则∠CBD的度数为________;
(2)若AC=8,BC=6,求AD的长;
(3)当AB=m(m>0),△ABC的面积为m+1时,求△BCD的周长.(用含m的代数式表示)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/04cbc44c-1812-4de1-86b8-3b0144c1f54b.png?resizew=200)
(1)若∠A=35°,则∠CBD的度数为________;
(2)若AC=8,BC=6,求AD的长;
(3)当AB=m(m>0),△ABC的面积为m+1时,求△BCD的周长.(用含m的代数式表示)
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【推荐2】如图①,矩形纸片ABCD的边长分别为a、b(a<b),点M、N分别为边AD、BC上两点(点A、C除外),连接MN.
(1)如图②,分别沿ME、NF 将MN两侧纸片折叠,使点A、C分别落在MN上的A′、C′处,直接写出ME与FN的位置关系;
(2)如图③,当MN⊥BC 时,仍按(1)中的方式折叠,请求出四边形A′EBN与四边形C′FDM 的周长(用含a的代数式表示),并判断四边形A′EBN与四边形C′FDM周长之间的数量关系;
(3)如图④,若对角线BD与MN交于点O,分别沿BM、DN将MN两侧纸片折叠,折叠后,点A、C恰好都落在点O处,并且得到的四边形BNDM是菱形,请你探索a、b之间的数量关系.
(1)如图②,分别沿ME、NF 将MN两侧纸片折叠,使点A、C分别落在MN上的A′、C′处,直接写出ME与FN的位置关系;
(2)如图③,当MN⊥BC 时,仍按(1)中的方式折叠,请求出四边形A′EBN与四边形C′FDM 的周长(用含a的代数式表示),并判断四边形A′EBN与四边形C′FDM周长之间的数量关系;
(3)如图④,若对角线BD与MN交于点O,分别沿BM、DN将MN两侧纸片折叠,折叠后,点A、C恰好都落在点O处,并且得到的四边形BNDM是菱形,请你探索a、b之间的数量关系.
![](https://img.xkw.com/dksih/QBM/2018/6/4/1959905883242496/1963409945796608/STEM/b60ebd9e5d174965b447a670cd8aa476.png?resizew=107)
![](https://img.xkw.com/dksih/QBM/2018/6/4/1959905883242496/1963409945796608/STEM/36da1b2ed1674a279732258123db7268.png?resizew=112)
![](https://img.xkw.com/dksih/QBM/2018/6/4/1959905883242496/1963409945796608/STEM/f26e60c2563d41f38607fbd375467414.png?resizew=104)
![](https://img.xkw.com/dksih/QBM/2018/6/4/1959905883242496/1963409945796608/STEM/1e8eac0c0da84655ba76d19551aeac12.png?resizew=127)
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【推荐1】(1)【探究发现】如图①,已知矩形
的对角线
的垂直平分线与边
,
分别交于点E,F.求证:四边形
是菱形;
(2)【类比应用】如图②,直线
分别交矩形
的边
,
于点E ,F,将矩形
沿
翻折,使点C的对称点与点A重合, 点D的对称点为
,若
,
,求
的长;
(3)【拓展延伸】如图③,直线
分别交平行四边形
的边
,
于点E ,F,将平行四边形
沿
翻折,使点C的对称点与点A重合,点D的对称点为
,若
,
,
,求
的长.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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(2)【类比应用】如图②,直线
![](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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b3bd5e6bc2a0a277d279bb01af9584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/495ad8b56428d2bce422618dff03b97a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7a9076e0157e5d5ed363ec768f7ae96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(3)【拓展延伸】如图③,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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解答题-问答题
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较难
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【推荐2】如图
,矩形
纸片,
,
,动点
,
分别从点
同时出发,均以
的速度,点
沿
方向,到终点
停止运动:点
沿
方向,到终点
停止运动,连接
,将矩形
在
左下方的部分纸片沿
折叠得到如图
,设点
运动的时间为
,重叠部分图形的面积为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/26/ed9620a0-7f70-4272-addd-a38284856b6d.png?resizew=364)
(1)当点
落到
边上时,求
的值;
(2)求
与
的函数关系式,并写出
的取值范围;
(3)当
时,若
以
为腰的等腰三角形,直接写出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/778cdfe7346279f9695a745fb780e806.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18eaed5e51f1e0be4f756230c41c6504.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/012b14b48c09eb820c49c13dccb642bb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/26/ed9620a0-7f70-4272-addd-a38284856b6d.png?resizew=364)
(1)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/752455799e49f846e2601304fec5d3b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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解答题-证明题
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较难
(0.4)
【推荐1】在正方形ABCD中,点M是射线BC上一点,点N是CD延长线上一点,且BM=DN.直线BD与MN相交于E.
![](https://img.xkw.com/dksih/QBM/2021/5/13/2720025255133184/2720349532659712/STEM/d04332cbe51940f591ab3e193e7676f4.png?resizew=243)
(1)如图1,当点M在BC上时,求证:BD﹣2DE=
BM;
(2)如图2,当点M在BC延长线上时,连接BN交AD于点F.若DE=
,且AB:ND=1:2时,求线段BN的长.
![](https://img.xkw.com/dksih/QBM/2021/5/13/2720025255133184/2720349532659712/STEM/d04332cbe51940f591ab3e193e7676f4.png?resizew=243)
(1)如图1,当点M在BC上时,求证:BD﹣2DE=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
(2)如图2,当点M在BC延长线上时,连接BN交AD于点F.若DE=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
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解答题-证明题
|
较难
(0.4)
解题方法
【推荐2】如图,在平行四边形
中,
的平分线交
于点
,交
的延长线于
,以
、
为邻边作平行四边形
.
![](https://img.xkw.com/dksih/QBM/2020/9/13/2549110123315200/2551024355287040/STEM/5bb4baf7-6b31-4121-8981-78862bd8905f.png?resizew=484)
(1)求证:四边形
是菱形;
(2)连结
、
,若
,则
是等边三角形吗?为什么?
(3)若
,
,
,
是
的中点,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.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/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/613d648ab11bb6336d31fa508fd7515b.png)
![](https://img.xkw.com/dksih/QBM/2020/9/13/2549110123315200/2551024355287040/STEM/5bb4baf7-6b31-4121-8981-78862bd8905f.png?resizew=484)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/613d648ab11bb6336d31fa508fd7515b.png)
(2)连结
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e918b70b02a73685e3c536c7f380e2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa2adca7dd9797920c99ab34a898789f.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcf05aaa351239448a9ab0e048f76faf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
名校
【推荐3】如图,在平面直角坐标系中,
于点
,且点
在
的正半轴上,点
和点
分别在
的负半轴和正半轴,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/c1366323-3fef-40d3-bb25-00cd1dbcb33b.png?resizew=551)
(1)求点
的坐标;
(2)点
点
出发以1个单位/秒的速度向
的负半轴方向运动,同时点
从点
出发向
轴的正方向运动,连接
交直线
于点
.设
、
两点运动时间为
秒,若
,连接
,
的面积为
,请用
的式子表示
,并直接写出
的式子表示
,并直接写出
的取值范围;
(3)在(2)的条件下,过点
作
,过点
作
轴的平行线交于
于点
,连接
,是否存在
,使
的面积等于
面积的2倍,如果存在,请求出
的值,如果不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.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/d053b14c8588eee2acbbe44fc37a6886.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/c1366323-3fef-40d3-bb25-00cd1dbcb33b.png?resizew=551)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)点
![](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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58754374c008ac8c6796977c4b7675c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a236a6ef0151937b01e3678826e3675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)在(2)的条件下,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc53585b4eed493801ebbfbd8ac175a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c2293f93791a597bf0162411f3395f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/568173802070b53ead410b8c5cef8ba3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/372629a8666de1e9bac3e7daadcac7b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次