名校
1 . 在
中,
,D为
延长线上一点,点E为线段
的垂直平分线的交点,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/c0a8b950-7806-449f-988d-dc483d2069d4.png?resizew=447)
(1)如图1,当
时,则
______
;
(2)当
时,
①如图2,连接
,判断
的形状,并证明;
②如图3,直线
与
交于点F,满足
.P为直线
上一动点.当
的值最大时,用等式表示
与
之间的数量关系为______,并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d9142db4dd2ef151bf3d4a63afb61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa5afb04a500f12f251606500e87c614.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8562f7f97e60f9bd71cce95b5dc29a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/c0a8b950-7806-449f-988d-dc483d2069d4.png?resizew=447)
(1)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/456e0f77d83975fdbdb60b499cb5b521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee2ef38925946da1145a68651da67da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57fdd2a3642716fcf5100011eb3ec88.png)
①如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c771a4feb150ad9cff8d70431c97eb17.png)
②如图3,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4aca16e0d54ce693cdc494636598b70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3168c02d6206627d5b4385e57bd15636.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5331e63e267061dc168d7d15fa57c0de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2023-10-27更新
|
200次组卷
|
2卷引用:北京市海淀区人大附中分校2021-2022学年九年级下学期月考数学试题
2 . 如图,在等腰
中,
,
,
是
边上的中点,点
,
分别在
,
边上运动,且保持
.连接
,
,
.在此运动变化的过程中,下列结论:①
是等腰直角三角形;②四边形
不可能为正方形,③
长度的最小值为
;④四边形
的面积保持不变;⑤
面积的最大值为4,其中正确的结论是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d42218a68301d770accaaefb96b19f8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fd09f591e95fd40e8ecfe6020f9f46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2f3df5713a423887c16e6355236372.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af2fdf1944afebb51cb6a5e6c74aadd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2f3df5713a423887c16e6355236372.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/26/cc4ff6fb-2063-47e6-ba66-299565a7b34e.png?resizew=176)
A.①②④ | B.①④⑤ | C.①③④ | D.①③④⑤ |
您最近一年使用:0次
3 . 如图,在菱形
中,
,
,
为正三角形,点
,
分别在菱形的边
,
上滑动,且
,
不与
,
,
重合.当点
在
,
上滑动时,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eee296a7d9fba487f1485c61580196f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.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/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/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff39c7aa648afd1080206c8080ff79e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/26/871c4389-7aea-4b66-a8b3-423400026cbd.png?resizew=165)
您最近一年使用:0次
4 . 在正方形
中,
为
延长线上一点,
交
于点
,连接
.
(1)如图1,若
,求证:
;
(2)如图2,连接
与
交于点
.若
,求证:
;
(3)如图3,
为正方形外一点,
,正方形
的边长为2,直接写出当
为何值时,
取最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/e6e490f703eb6c9bb1278c78ebc2d661.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/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/26/2f780fd1-33d2-48d3-9147-4fa32c22da5b.png?resizew=356)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf857e03d4320c999d328fd657c2d412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/401abdfd1b3605f4d8a82c41003507a9.png)
(2)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/779b54b76d53c4fee53b7fc9bd1b9b63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7e88cef673e7cf2ef692e3099657e06.png)
(3)如图3,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b636ea5f86996e95f770163fe753b51d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c06b39a3804e08a580e8defa3e84cb.png)
您最近一年使用:0次
2023-10-26更新
|
207次组卷
|
2卷引用:2022年广东省惠州市博罗长城学校中考模拟数学试题
5 . 在
中,
,
,将线段
绕点C旋转
,得到线段
,连接
、
.
(1)如图1,将线段
绕点C逆时针旋转
,则
的度数为_____________;
(2)将线段
绕点C顺时针旋转
,
①如图2,求
的度数;
②如图3,若
的平分线
交
于点F,交
的延长线于点E,连接
.用等式表示线段
、
、
之间的数量关系,并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.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/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b40aa8d2482d698ebef69cf225f99f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/27/41bc49fc-2c76-4313-8183-ebd293e8fcdb.png?resizew=345)
(1)如图1,将线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/868ff1350bd72625328c85c3097cd85e.png)
(2)将线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
①如图2,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/868ff1350bd72625328c85c3097cd85e.png)
②如图3,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727ad3e630a224303d6d3b8ad5c114ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
您最近一年使用:0次
6 . 初步探究:如图1,在四边形
中,
,
,E,F分别是
,
上的点,且
.探究图中
、
、
之间的数量关系,小王同学探究此问题的方法是:延长
到点G,使
,连接
,先证明
,再证明
,可得出结论是 .
灵活运用:如图2,在四边形
中,
,
,E,F分别是
、
上的点,且
,上述结论是否仍然成立,并说明理由.
拓展延伸:如图3,在四边形
中,
,
,若点E在
的延长线上,点F在
的延长线上,仍然满足
,请直接写出
与
的数量关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21eb847a1722ed6e10e23c59d53fe7d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e370923be3d4b7034a5992065b5f7d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060705794ef87cc71dac40c57f27b1d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d598f4a17ac14970ade9f381e9aee970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e31edc5b71c488ca9942d70d9298f01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab17635a999236e8d2e35017a208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc180eda08edfb6d54eb04da7741f099.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac09e961b25848c2860065aa8f577e10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/382dcc8aa37ed16c588b41888c3906a7.png)
灵活运用:如图2,在四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/173904239da66b7bef7cb1d997cc40ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e370923be3d4b7034a5992065b5f7d7.png)
拓展延伸:如图3,在四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4579332087ee585f1cae423a6ae1862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e370923be3d4b7034a5992065b5f7d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e31edc5b71c488ca9942d70d9298f01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4189a0821a0ffab9dc171ecd279ba442.png)
您最近一年使用:0次
2023-10-26更新
|
1094次组卷
|
90卷引用:2020年重庆市双福育才中学中考数学二模试题
2020年重庆市双福育才中学中考数学二模试题(已下线)第08讲 三角形中的对角互补模型-【多题一解&一题多解】冲刺2023年中考数学满分应对方法与策略(全国通用)浙江省台州市仙居县白塔中学2023-2024学年九年级上学期期中数学试题(已下线)第3讲 全等三角形(已下线)数学(广西卷)-学易金卷:2024年中考第一次模拟考试湖南省邵阳市武冈市2019-2020学年八年级上学期期中数学试题江苏省泰州中学附属初级中学2020-2021学年八年级上学期数学第一次学科调研试题江苏省江阴市周庄中学2020-2021学年八年级上学期9月月考数学试题湖北省武汉市硚口区、经开区2020-2021学年八年级上学期期中数学试题四川省成都市第十八中学校2020-2021学年七年级下学期期中数学试题湖北省武汉市黄陂区2021-2022学年八年级上学期10月月考数学试题江苏省宜兴市丁蜀学区2021-2022学年八年级上学期第一次质量调研考试数学试题湖北省孝感市孝南区2021-2022学年八年级上学期期中数学试题山东省济宁学院附属中学2021-2022学年七年级上学期期中数学试题湖南省衡阳市常宁市2021-2022学年八年级上学期期末数学试题湖南省常德市武陵区第七中学2021-2022学年八年级上学期期中数学试题辽宁省沈阳市和平区第一三四中学2021-2022学年七年级下学期6月月考数学试题(已下线)广东省深圳市深圳中学2021-2022学年七年级下学期期末数学试题陕西省西安市第三中学联考2021-2022学年七年级下学期期末考试数学试题(已下线)江苏省泰州市姜堰区南苑学校2022-2023学年八年级上学期数学第一次月度独立作业10.9江苏省南通市通州区六校2022-2023学年八年级上学期第一次联考数学试题江苏省无锡市江阴市第一初级中学2022-2023学年八年级上学期10月月考数学试题湖北省武汉市杨春湖实验学校2022-2023学年八年级上学期10月月考数学试卷江苏省无锡市江阴市周庄中学2022-2023学年八年级上学期9月月考数学试题福建省永春县侨中片区学校联考2022-2023学年八年级上学期期中核心素养质量监测数学试题(已下线)重难点02 全等三角形(11种模型)-2022-2023学年八年级数学上学期考试满分全攻略(苏科版)江苏省无锡市锡山区东亭中学2022-2023学年八年级上学期10月月考数学试题(已下线)重难点01 全等三角形(6种模型) -2022-2023学年八年级数学考试满分全攻略(人教版)湖北省天门市六校联考2022-2023学年八年级上学期期中数学试题(普通班)浙江省杭州市上城区开元中学2022-2023学年八年级上学期期中数学试题(已下线)第1章 全等三角形 章末检测卷-2022-2023学年八年级数学上册重难题型全归纳及技巧提升专项精练(苏科版)山东省德州市庆云县2022-2023学年八年级上学期期中数学试题广东省江门市台山市广州大学台山附属中学2022-2023学年八年级上学期期中考试数学试题湖北省武汉市洪山区弘光学校2022-2023学年八年级上册第一次月考数学测试题 (已下线)湖北省武汉市新洲区阳逻街第二中学2022-2023学年八年级上学期数学期末测试卷江苏省泰州市姜堰区姜堰区张甸初级中学2022-2023学年八年级上学期第一次学情检测数学试题江苏省盐城市东台市实验中学教育集团2022-2023学年八年级上学期第一次月考数学试题安徽省安庆市第二中学2022-2023学年八年级上学期数学期末检测河南省郑州市中原区郑州外国语中学2021-2022学年七年级下学期期末数学试题(已下线)专题4.5利用三角形全等测距离-【帮课堂】2022-2023学年七年级数学下册同步精品讲义(北师大版)(已下线)重难点03 全等三角形(4种模型2种添加辅助线方法)-【满分全攻略】2022-2023学年七年级数学下学期核心考点+重难点讲练与测试(沪教版)广东省佛山市禅城区第十四中学2022-2023学年七年级下学期期中数学试题湖北省襄阳市谷城县2022-2023学年八年级上学期期末数学试题江西省宜春市丰城中学2022-2023学年七年级下学期期末数学试题湖北省武汉市光谷实验中学2022-2023学年八年级上学期期中数学试题河南省郑州市管城区2022-2023学年七年级下学期期末数学试题(已下线)专题02探索三角形全等的条件(8个知识点9种题型1个易错考点3种中考考法)-【帮课堂】2023-2024学年八年级数学上册同步学与练(苏科版)河南省信阳市信阳高新技术产业开发区信阳市羊山中学2022-2023学年八年级上学期期末数学试题(已下线)专题04 全等三角形模型训练(6类经典模型+优选提升)-【好题汇编】备战2023-2024学年八年级数学上学期期中真题分类汇编(人教版)(已下线)专题05 全等三角形压轴题训练-【好题汇编】备战2023-2024学年八年级数学上学期期中真题分类汇编(人教版)湖南省永州市冷水滩区李达中学2022-2023学年八年级上学期期中数学试题重庆市江北区第十八中学2023-2024学年八年级上学期9月月考数学试题湖北省天门市六校联考2022-2023学年八年级上学期期中数学试题(实验班)江西省鹰潭市贵溪市2021-2022学年七年级下学期期末数学试题福建省泉州市泉州市第六中学2023-2024学年八年级上学期第一次月考数学试题(已下线)湖北省襄阳五中华侨城实验学校2023-2024学年八年级上学期数学周测(6)试卷10.12山东省德州市庆云县渤海中学2023-2024学年八年级上学期第一次调研数学试题湖南省长沙市湘郡培粹中学2023-2024学年八年级上学期第一次月考数学试题湖北省鄂州市临空经济区三校联考2023-2024学年八年级上学期月考数学试题广东省江门市鹤山市昆仑学校2023-2024学年八年级上学期第一次月考数学试题湖北省省直辖县级行政单位12校联考2023-2024学年八年级上学期月考数学试题(已下线)专题12.7 全等三角形章末八大题型总结(拔尖篇)-2023-2024学年八年级数学上册举一反三系列(人教版)湖北省黄石市有色中学2023-2024学年八年级上学期月考数学试题江苏省无锡市锡山区锡山高级中学实验学校2023-2024学年八年级上学期10月月考数学试题(已下线)专题6.1 期中测试卷(拔尖)-2023-2024学年八年级数学上册举一反三系列(浙教版)河南省信阳市罗山县2023-2024学年八年级上学期期中数学试题湖南省常德市桃源县2023-2024学年八年级上学期期中数学试题安徽省芜湖市无为市2023-2024学年八年级上学期期中数学试题(已下线)专题13.13 全等三角形章末十五大题型总结(拔尖篇)-2023-2024学年八年级数学上册举一反三系列(华东师大版)湖北省武汉市新洲区邾城街2023-2024学年八年级上学期期中数学试题天津市第八中学等四校2023-2024学年八年级上学期期中数学试题安徽省淮南市西部联考2023-2024学年八年级上学期期中数学试题(已下线)专题14.7 全等三角形章末八大题型总结(拔尖篇)-2023-2024学年八年级数学上册举一反三系列(沪科版)安徽省淮南市谢家集区等3地2023-2024学年八年级上学期期中数学试题(已下线)专题1.7 全等三角形章末八大题型总结(拔尖篇)-2023-2024学年八年级数学上册举一反三系列(苏科版)(已下线)专题1.13 三角形的初步知识章末十六大题型总结(拔尖篇)-2023-2024学年八年级数学上册举一反三系列(浙教版)福建省厦门外国语学校石狮分校2023-2024学年八年级上学期期中数学试题福建省泉州市联考2023-2024学年八年级上学期月考数学试题浙江省宁波市北仑区宁波联合实验中学2023-2024学年八年级上学期期中数学试题山东省德州市宁津县第一实验中学2023-2024学年八年级上学期10月月考数学试题山东省日照市东港区北京路中学2023-2024学年八年级上学期期中数学试题广西壮族自治区桂林市永福县2023-2024学年八年级上学期期中数学试题重庆市渝北区六校联盟2023-2024学年八年级上学期第二次大练兵(期中)数学试题河南省洛阳市偃师区偃师区实验中学2023-2024学年八年级上学期期中数学试题江苏省无锡市锡山区锡山高级中学实验学校2023-2024学年八年级上学期10月月考数学试题辽宁省鞍山市千山区2023-2024学年八年级上学期12月月考数学试题四川省自贡市蜀光绿盛实验学校2023-2024学年八年级上学期9月月考数学试题(已下线)专题06 四边形常见模型(考点清单+7种题型解读)-2023-2024学年八年级数学下学期期中考点大串讲(苏科版)(已下线)专题03平行四边形(考题猜想,5种模型与解题方法)-2023-2024学年八年级数学下学期期中考点大串讲(沪教版)广东省揭阳市揭西县2023-2024学年七年级下学期第二次月考数学试题
7 . 如图,在四边形
中,点
是直线
上一点,将射线
绕点A逆时针旋转
度交直线
于点
.
(1)如图①,若四边形
为菱形,点
在线段
上,
,
,求证:
;
(2)如图②,若四边形
为正方形,点
在线段
的延长线上,
,连接
,试猜想线段
,
与
之间的数量关系,并加以证明;
(3)若四边形
为正方形,
,
,
,连接
,请直接写出
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/26/d240943a-a3f3-40ce-8216-90847a3e793a.png?resizew=427)
(1)如图①,若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/284e282bb1d9fbf8634b3506ee5358ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97cf714ffb3fd5917a76b191640b55fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d38d97f03faed3152db2fd3bd1919944.png)
(2)如图②,若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c69a23d106fd34aa17b22e9c9a8de36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(3)若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c69a23d106fd34aa17b22e9c9a8de36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/255a3e8a03775d0fc699ee1f7bb61a74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
您最近一年使用:0次
名校
8 . 如图,点
是正方形
对角线
的延长线上任意一点,以线段
为边作一个正方形
,连接
,
相交于点
.
与
之间的关系,并证明;
(2)若
,
,求
的长;
(3)若点
为
中点,求证:
、
互相平分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d0e8404f347a0eb4c76f4d25d9bdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce8f887360a533f0a25b0b34fb11f0a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6834ac70927ae08d7d36a1922403c9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3da257beb296514b57a1e3169b099dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307bd991211ec79b47a4be52933bb8e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
您最近一年使用:0次
2023-10-26更新
|
127次组卷
|
4卷引用:四川省达州市2023-2024学年九年级上学期9月月考数学试题
四川省达州市2023-2024学年九年级上学期9月月考数学试题山东省枣庄市滕州市滕州育才中学2023-2024学年九年级上学期期中数学复习试题(已下线)期中复习与测试(2)(第1-4章)-2023-2024学年九年级数学上册基础知识专项突破讲与练(北师大版)(已下线)专题07 四边形模型(六大题型)-【好题汇编】备战2023-2024学年八年级数学下学期期中真题分类汇编(山东专用)
9 . 探究式学习是新课程倡导的重要学习方式,某兴趣小组拟做以下探究.等边
的
边延长线上有一动点
,连接
,以
为边作等边
,连接
.
【初步感知】
(1)如图1,当
点不与
点重合时,兴趣小组探究得出结论:
①
;②
的度数是定值,请你写出他们的证明过程;
【深入探究】
(2)如图2,点
是线段
的中点,连接
,猜想
和
的数量关系.
小明猜想:假设
点刚好和
点重合时,猜想出结论是:
;
小红也提出了自己的想法:因为题设中提到了中点,所以想到添加中点构造辅助线进行转化.如图
,是小红添加的辅助线,点
,点
,点
分别是线段
,
,
的中点,请你帮她继续完成证明过程.
【拓展运用】
(3)在(2)的条件下,若等边
的边长是
,则点
从点
向右运动过程中,
的最小值是
.(直接写出答案,无需证明)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0213c5787a5a6b38d11bceca5567f67.png)
【初步感知】
(1)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/024dc2ccbbe321774df5d44e8785b203.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/189590914cde8d95141517df9bf1050f.png)
【深入探究】
(2)如图2,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8120f2eeb724c756b5f84a14c6df527.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8120f2eeb724c756b5f84a14c6df527.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
小明猜想:假设
![](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/b0fb32a03264151340401a243118d973.png)
小红也提出了自己的想法:因为题设中提到了中点,所以想到添加中点构造辅助线进行转化.如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
【拓展运用】
(3)在(2)的条件下,若等边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.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/e8120f2eeb724c756b5f84a14c6df527.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fb32a03264151340401a243118d973.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/30/d4b4dba7-86d0-4542-b84f-b9fb64f69172.png?resizew=463)
您最近一年使用:0次
10 . 如图,在
中,求作菱形
,且点E在线段
上,点F在线段
上.作法如下:
①分别以点A,E为圆心,大于
的长为半径画弧,两弧交于点P;
②连接
;
③以点
为圆心,
长为半径画弧交BC于点E;
④连接
并延长交
于点F.
(1)已知以上作法步骤是排乱的,则正确的排序是__________;
(2)利用(1)中作图所确定的条件证明四边形
为菱形;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/26/6d73557a-731b-4458-b2e1-b87445dc005a.png?resizew=171)
①分别以点A,E为圆心,大于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1acac248e2a60467837666eb0c910749.png)
②连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
③以点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
④连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13af018556f0b484ed38519f2edc791c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(1)已知以上作法步骤是排乱的,则正确的排序是__________;
(2)利用(1)中作图所确定的条件证明四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
您最近一年使用:0次