名校
1 . 如图,已知
与
都是等边三角形,点
在同一条直线上,
与
相交于点
,
与
相交于点
,
与
相交于点
, 则下列结论①
;②
;③
;④
是等边三角形.其中正确的是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dfc3b9d7f07b52a69ceecbc36a1808.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb760b95bbee417853cf5c41c6d66e1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/444f521df9847e7c60ba9f82ee796090.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c23c66ab7d74f51cb4b79d1029fb38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7555fb7c554993b9ef297dcfedfd56e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7555fb7c554993b9ef297dcfedfd56e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f98ec7a7f8d8760b5d333fb66ae18b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c23c66ab7d74f51cb4b79d1029fb38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ba8c45ade0bb663057fbc44614edfd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc8c5a0011c9af0c81b06e0b9b6dee3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d8995662a7eb25ef1cfefaba2a86e36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a210c85e00d6a1106cf705f0cb63ebfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b1df9ac43a31cbfc4fb407513847a9a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/27/b4dae5bd-fbd9-4a0e-b841-f24676d5eb27.png?resizew=172)
您最近一年使用:0次
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2 . 已知:如图,
和
均为等腰三角形,
于点
交
于点
,点
三点共线,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/27/faa59e8b-b86d-4019-a511-d037e31aef27.png?resizew=141)
(1)若
,求
的长;
(2)若
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dfc3b9d7f07b52a69ceecbc36a1808.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb760b95bbee417853cf5c41c6d66e1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73dfb62e71ca816a05d173f0bb36dca8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b4e8fc459ebad4df1a3ac940158e100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9214f0f88abad3f5b0fbf82453052b8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f9c6a876857c77f328c89720189bbc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/338dc5a99528fd2cfeb519c959c9910c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/27/faa59e8b-b86d-4019-a511-d037e31aef27.png?resizew=141)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a2186ecee282dc501c86da56573bb72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5bbc348982820d1ee9deda9a2ea1437.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47283523cb0bcc8928ca3a6999a1ca1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b041a8a3673c1e36248ac33e1ef0ef34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a39a3dc758a5d22453152216c857f1.png)
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3 . 如图
中,
.
为
中点,
为
上一点,
交DE的延长线于点
.则四边形
周长的最小值是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/26/e8c4fb29-4386-4e48-b12a-e20681238bb5.png?resizew=189)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9db7d35a4c60cc4ec66e119c287e4513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/fe446a0456e9168028baee032d8d7d23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c5f0d36d436eec20eeb17bb72c7dede.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/376d1d2761ad22087194d320d2ec9c87.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/26/e8c4fb29-4386-4e48-b12a-e20681238bb5.png?resizew=189)
A.16 | B.17 | C.18 | D.19 |
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名校
4 . 如图,已知在
中,
,
,直角
的顶点P是
的中点,两边
、
分别交
、
于点E、F.以下四个结论:①
;②
是等腰直角三角形;③
;④
.其中正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/a37bf298-31be-449d-b6a9-4cb193381c35.png?resizew=144)
![](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/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfa70e7c9ef8b856b494d370b7d76482.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/6c8a8f63088245653535d5d23d6f26a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/769d46f16f6c57f869a54238e7214ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c62ecafdb6da0e714901109caae5259.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/a37bf298-31be-449d-b6a9-4cb193381c35.png?resizew=144)
A.①②③ | B.①②④ | C.②③④ | D.①②③④ |
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2023-01-03更新
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10卷引用:四川省遂宁市射洪市射洪中学校2023-2024学年八年级上学期12月月考数学试题
四川省遂宁市射洪市射洪中学校2023-2024学年八年级上学期12月月考数学试题河南省南阳市宛城区实验中学2022-2023学年八年级上学期第二次月考数学试题广东省茂名市高州市第一中学附属实验中学2022-2023学年七年级下学期5月月考数学试题山东省东营市广饶县大王镇中心初中2023-2024学年八年级上学期12月月考数学试题广东省韶关市翁源县2023-2024学年八年级上学期月考数学试题河南省信阳市商城县2021-2022学年八年级上学期期末数学试题(已下线)专题12.17 三角形全等几何模型-共顶角(点)模型(专项练习)-2022-2023学年八年级数学上册基础知识专项讲练(人教版)(已下线)专题1.44 全等三角形几何模型-共顶角(点)模型(专项练习)-2022-2023学年八年级数学上册基础知识专项讲练(浙教版)四川省资阳市安岳县2022-2023学年八年级上学期期末数学试题2023年广东省深圳市南山区南山实验教育集团南海中学中考三模数学试题
名校
5 . 已知:如图,
,
.
(1)求证:
;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e53497af8899cb299d762f1a4f46a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1beff025b32f688316009552d2fd8e1a.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bde85ba424e87b620ba453b9283fdd3c.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33cbad6599796efc1c177ae9349feda9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/21/3b5bef31-3612-4dfc-8ab4-f496c2232db8.png?resizew=208)
您最近一年使用:0次
2017-12-15更新
|
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6卷引用:【校级联考】四川省遂宁市蓬溪县2018-2019学年八年级12月月考数学试题