1 . 如图,
为
的切线,
为切点,过
作
,垂足为
,交
于点
,延长
与
的延长线交于点
.
(1)求证:
为
的切线;
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ef9abe2c6ef0ea16d6ca91e0e4e020e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/11/06b99338-56a4-4847-b9d1-853ce42fae4e.png?resizew=191)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ba1df94176a1f769c7a0a12bf357fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d0e93b6bfffaf9da2bf3efa785b61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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名校
2 . 如图,
中,E、F是对角线
上的两点,且
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ce1475f537b4ad21775bfaa16daa0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f40b3bf6b27f936e0747de92151a1f77.png)
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10卷引用:北京市第十九中学2022-2023学年九年级上学期开学考试数学试题
北京市第十九中学2022-2023学年九年级上学期开学考试数学试题山东省济南市天桥区天桥区泺口实验学校2022-2023学年八年级下学期月考数学试题山东省济南市天桥区2022-2023学年八年级下学期期末数学试题新疆维吾尔自治区和田地区墨玉县2022-2023学年八年级下学期期中数学试题福建省泉州市永春县2022-2023学年八年级下学期期末数学试题四川省泸州市江阳区第十中学校2022-2023学年八年级下学期期中数学试题福建省厦门市杏南中学2022-2023学年八年级下学期期中数学试题福建省龙岩市第八中学2020-2021学年八年级下学期第一次月考数学试题福建省泉州市培元中学2022-2023学年八年级下学期期中数学试题福建省龙岩市新罗区龙岩莲东中学2023-2024学年八年级下学期期中数学试题
3 . 如图,正方形
外取一点E,连接
.过点A作
的垂线交
于点P,若
,
.下列结论:①
;②点B到直线
的距离为
;③
;④
,其中正确结论的序号是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5e459ae7f530f7990718fd9c5fbc7d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c17d3ece9b7096aa5db32383448a072f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08aa6fd52f3933cbded9ce8c880b4a10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fd94ce5e3c9daeb9129d945a45a953e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35ecee2530431d7b1be2b86223162d47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735a10502b6e23831dff8c6ec363733d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/19/13638dde-a367-4cdb-8001-07887542bf9c.png?resizew=149)
A.①③④ | B.①②③ | C.②③④ | D.①②③④ |
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5卷引用:广东省深圳市中科实验学校2023-2024学年九年级上学期开学考数学试题
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4 . 如图,等边
中,点D在
上,点E在
上,
,连接
、
交于点F,
,
,则
的长为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c8fb32ae05a9c1abd3374f5c5f7a999.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f825d6b56199f46f7c09714600e65b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7cbfaec1d9dcaaf159b060163436113.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
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黑龙江省哈尔滨市南岗区工业大学附属中学2023-2024学年九年级上学期开学考试数学(五四制)试题重庆市沙坪坝区第八中学校2023-2024学年九年级下学期3月月考数学试题(已下线)专题02 30°45°60°角的三角函数值(1个知识点5种题型1个易错点1中中考考法)-【帮课堂】2023-2024学年九年级数学下册同步学与练(北师大版)(已下线)专题14特殊角的三角函数、由三角函数值求锐角(1个知识点6种题型)-【帮课堂】2023-2024学年九年级数学下册同步学与练(苏科版)
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5 . 四边形
是正方形,对角线
、
相交于点O.
为正方形内一点,
,将
绕点A按顺时针方向旋转一定角度得到
.点D、E的对应点分别为点B,F,直线
经过点
.
的旋转角度为______°;
(2)如图1,当点E与点O重合时,判断四边形
的形㧋,并说明理由;
(3)如图2,当点E与点O不重合时,试判断
,
,
之间的数量关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d10b6175fb056760a9357936d14ffe82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c771a4feb150ad9cff8d70431c97eb17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4139b091e9dc432b267ff68420c77de4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c771a4feb150ad9cff8d70431c97eb17.png)
(2)如图1,当点E与点O重合时,判断四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5ec3f44cd7f4689920e5df628177737.png)
(3)如图2,当点E与点O不重合时,试判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
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4卷引用:福建省福州教育学院附属中学2023-2024学年九年级上学期开学考试数学试题
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6 . 成都大运会主火炬塔位于东安湖体育公园,如图,小明想测量东安湖
,
两点间的距离,他在东安湖的一侧选取一点
,分别取
的中点
,但
之间被障碍物遮挡,故无法测量线段
的长,于是小明在
延长线上分别选取
两点,且满足
,小明测得线段
米,则
两点间的距离是_____ 米.
![](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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d071d008cdc313f6ed16a602f8a9669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f44755c5fee4b90266eac73ad47a128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f44755c5fee4b90266eac73ad47a128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7fbb4164931dd557c7416fce2fc15ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ad58997b9dc0b341c9af08f0cd1fbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b38593d313ac0f44308346f8571dcb0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40c86b26c55a1ff19ebfb5fc3c19229f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae6f48b9a53c0155a692509cf31f7e6.png)
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6卷引用:四川省成都实验外国语学校西区2023-2024学年九年级上学期开学数学试题
四川省成都实验外国语学校西区2023-2024学年九年级上学期开学数学试题(已下线)2022年四川省南充市中考数学真题变式题11-15题四川省成都市天府新区2021-2022学年八年级下学期期末数学试题(已下线)专题6.30 平行四边形(全章复习与巩固)(基础篇)(专项练习)-2022-2023学年八年级数学下册基础知识专项讲练(北师大版)四川省成都市青白江区2022-2023学年八年级下学期期末数学试题第18章 18.1 18.1.2 课时3三角形的中位线
名校
7 . 如图,在
中,
,
,点D为
边上一点,连接
,过点B作
交
的延长线于点E.
(1)如图1,若
,
,求
的面积;
(2)如图2,延长
到点F使
,分别连接
交
于点G.求证:
.
(3)如图3,若
,点M是直线
上的一个动点,连接
,将线段
绕点D顺时针方向旋转
得到线段
,点P是
边上一点,
,Q是线段
上的一个动点,连结
,
.当
的值最小时,请直接写出
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b937442ad4cc480adc11bb143559454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/15/94ed32fa-2b96-40e2-a36e-0373fc9d67e3.png?resizew=458)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f492e7f37c6429700b1df350864db09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7cbfaec1d9dcaaf159b060163436113.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)如图2,延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bbc115577cd400ad9b83b0102440c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/314e97e6bb7c98e8af658554d6f6503b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04e3822201a735481b864b611e21d2f9.png)
(3)如图3,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56ee81929c987732fcb379802eeef7a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2e2c0d4ac2bd79f6cea7a9b1a50662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2e2c0d4ac2bd79f6cea7a9b1a50662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22200e13dc350798cb042d9615f0c7c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38b65a033fdfdfd9b2f92fcf6a6e9358.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a77caa1d70b7da0c86d375752853de8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6c3c8e5afe491a492ce5dac7af56668.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170ebee433ed734cd44f39f9a5cae99.png)
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4卷引用:重庆市第十一中学教育集团2023-2024学年九年级上学期开学考试数学试题
重庆市第十一中学教育集团2023-2024学年九年级上学期开学考试数学试题湖北省黄石市黄石港区教研协作体2023-2024学年九年级上学期月考数学试题重庆市涪陵区2022-2023学年八年级上学期期末数学试题(已下线)(期中期末真题汇编)第13章 轴对称 (分层精练)-【题型分类精粹】2023-2024学年八年级数学上学期期中期末复习讲练系列【考点闯关】(人教版)
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8 . 在
中,
,
,
,点
是线段
上一动点,连接
.
(1)如图1,若
,求
的面积;
(2)如图2,若
,以
为边在
下方作等腰
,
,连接
,若点
是线段
中点,过
作
于点
的延长线交
于点
,求证:
;
(3)如图3将
沿
翻折
.连接
,
是线段
上一点,且
,直接写出当
取得最小值时
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aabecf66d94e4094f9cc46fd8ee050f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/622342eaf32343fcaace5526a0bce038.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1ac2e11788860424508ea9e80cf89d.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/26/f042127e-60c8-486f-8043-8045f443c4e0.png?resizew=683)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2c7c9b9aa14880cdb11e9491eb26274.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/479bb5e937f4fdb1fcbca229e62e0e80.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/b5ce497569436aa4db106121018162ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4557ee10ad429943f40252d9bb90565.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7699dd30e08702bfc6499eb9c89e54a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba6393f489fa5c8be042e2a6697219d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a35c4b0911eef327b3f550088b55fed7.png)
(3)如图3将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73636989e83905f8800a865c2b608c43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c004a153df9d8109c3cf4441c1ebfb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943712a5e96b16cc15d775cc4687237e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfd309893485c66abab5dd21c712bc1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f66808673407d9a9b8a1e5b8d18197d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/def0507ec4fec5f53b5e55d74ba3a3e4.png)
您最近一年使用:0次
名校
9 . 如图,在
中,点
,
在对角线
上,且
,连接
、
、
、
.求证:
(1)
;
(2)四边形
是平行四边形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ce1475f537b4ad21775bfaa16daa0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab17635a999236e8d2e35017a208d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/12/0a1b04ea-2786-4e63-8da3-d7181eb716fc.png?resizew=155)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f8f7a3cf5a6acc41c4932eb8548e9e7.png)
(2)四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f3c15b30bd155641e548a7d8c172dd4.png)
您最近一年使用:0次
2023-09-12更新
|
153次组卷
|
10卷引用:广东省东莞市大朗镇佳美学校2023-2024学年九年级上学期开学数学试题
广东省东莞市大朗镇佳美学校2023-2024学年九年级上学期开学数学试题四川省成都市武侯区棕北中学西区实验学校2023-2024学年上学期九年级开学数学试题(已下线)2023年四川省南充市中考数学真题变式题17-21题陕西省宝鸡市岐山县2018-2019学年八年级下学期期末考试数学试题贵州省毕节市织金县2020-2021学年八年级下学期期末数学试题(已下线)【新东方】 【2021.5.18】【YW】【初二下】【数学】【YW0018】广东省东莞市东华初级中学2021-2022学年八年级下学期期中数学试题新疆维吾尔自治区省直辖县级行政单位石河子市2021-2022学年八年级下学期期末数学试题(已下线)浙江八年级下期中真题精选(基础60题专练)-【满分全攻略】2022-2023学年八年级数学下学期核心考点+重难点讲练与测试(浙教版)黑龙江省绥化市庆安县2022-2023学年八年级下学期期末数学试题
名校
10 . 已知:如图,在正方形
外取一点
,连接
、
、
,过点
作
的垂线交
于点
.若
,
,下列结论:①
;②点
到直线
的距离为
;③
;④
.其中正确结论的序号是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0213c5787a5a6b38d11bceca5567f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c17d3ece9b7096aa5db32383448a072f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ae16b72924eb24c45f5dcfab07cc01b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/935c222edcab5b4efeb5ab15cd4fa621.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fd94ce5e3c9daeb9129d945a45a953e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d4f61ba537583eff594f849975a42e0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/12/03496f5b-b6a0-4843-a2ac-51fe2ff0aef6.png?resizew=190)
A.①③ | B.①②③ | C.①③④ | D.①②③④ |
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