如图,
,
均是等边三角形,点B,D,E三点共线,连接
,
,
.
;
(2)若线段
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0a0d2a2415ec1e1374ac46bc232f450.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421291381be28da4bd16560fd383b4a9.png)
(2)若线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6370d6c626bdabf1fc694501ee6c714f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
23-24八年级上·陕西商洛·期末 查看更多[3]
陕西省商洛市商南县2023-2024学年八年级上学期期末数学试题广东省茂名市愉园中学等几校2023-2024学年八年级下学期月考数学试题(已下线)第五章第02讲 简单的轴对称图形——等腰(等边)三角形(7类热点题型讲练)-【帮课堂】2023-2024学年七年级数学下册同步学与练(北师大版)
更新时间:2024-03-03 14:42:06
|
相似题推荐
解答题-证明题
|
适中
(0.65)
名校
【推荐1】如图,在
中,D为
边上一点,
,
.求证:
![](https://img.xkw.com/dksih/QBM/2022/12/22/3136481178238976/3137816997281792/STEM/6d8c39132f00489db5075894c7d9dfd2.png?resizew=193)
(1)
.
(2)
平分
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aa2da622fcdc28ee85c08c5b0a4e3af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06a2ab6940dca62be1f3b2b5f8531990.png)
![](https://img.xkw.com/dksih/QBM/2022/12/22/3136481178238976/3137816997281792/STEM/6d8c39132f00489db5075894c7d9dfd2.png?resizew=193)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f03a43549ab71f0998fffbcb48397b00.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3e081637bcea5368cc72370bae283b.png)
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解答题-作图题
|
适中
(0.65)
【推荐2】如图,在
中,
,
,
,
是边
的中点,
是边
上一点,且
.
(1)用直尺和圆规在边
上作点
,使得
;(不写作法,保留作图痕迹)
(2)在(1)的条件下:
①求
的长;
②线段
与线段
的数量关系是______,位置关系是______.
![](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/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3620030e8808da46df97330103827913.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/28/fa2d571d-b1b6-4c45-84af-039a3cc598b5.png?resizew=163)
(1)用直尺和圆规在边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f95a7cede3b3a97f879491a1cefa071f.png)
(2)在(1)的条件下:
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
②线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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解答题-证明题
|
适中
(0.65)
【推荐1】如图1,在菱形
和菱形
中,
,且
,连接
和
.
![](https://img.xkw.com/dksih/QBM/2020/11/10/2590073517711360/2602089075834880/STEM/0abcd98f-4d57-49fb-b05c-88ec9489ea92.png?resizew=376)
(1)求证:
;
(2)如图2,将菱形
绕着点
旋转,当菱形
旋转到使点
落在线段
上时(
),求点
到
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d0e8404f347a0eb4c76f4d25d9bdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892b7866f050d2ed069811f7581bb907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070bc896d35495237fd65576e9b6f88e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/2020/11/10/2590073517711360/2602089075834880/STEM/0abcd98f-4d57-49fb-b05c-88ec9489ea92.png?resizew=376)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc180eda08edfb6d54eb04da7741f099.png)
(2)如图2,将菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d0e8404f347a0eb4c76f4d25d9bdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d0e8404f347a0eb4c76f4d25d9bdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9808cb794f9a090e34c7bc86387ea7a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,点
是等边三角形
中
边上的动点(
),作
的外接圆交
于点
.点
是圆上一点,且
,连结
交
于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/e8f5a603-d419-4658-9ee3-0f97168a3b8c.png?resizew=200)
(1)求证:
;
(2)当点
运动时,
的度数是否变化?若变化,请说明理由;若不变,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/107a1de8e7f04b3f99ad223b5a3474a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4234cf4d8159f5df0333bcc269ffe099.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0bf0c9f7442f7ce9694b5cf3d6e56a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/e8f5a603-d419-4658-9ee3-0f97168a3b8c.png?resizew=200)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b7822a0c2174723a7d22a4ffee53413.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95ee1c8b8f17e6adfe29201544ee304c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95ee1c8b8f17e6adfe29201544ee304c.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐2】如图,在正方形
中,等边三角形
的顶点
分别在边
和
上,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
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您最近一年使用:0次