1 . 如图,已知
中,
,
,
,点D为
的中点.如果点P在线段
上以
的速度由点B向点C运动,同时,点Q在线段
上由点C向点A运动.
(1)若点Q的运动速度与点P的运动速度相等,经过1秒后,
与
是否全等,请说明理由;
(2)若点Q的运动速度与点P的运动速度不相等,当点Q的运动速度为多少时,能够使
与
全等?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54c72b972f847fc98a41077917cc9077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4354365ca0929f8a606ed0bf341e4ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9547f6b5c7c54d216ecea72becb7d373.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5631e6ec24d3d67bf4592313b6b3f4f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/20/cca78559-e721-451e-bb8b-693caf625a71.png?resizew=118)
(1)若点Q的运动速度与点P的运动速度相等,经过1秒后,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/983add910c8e09954f164a5e87d1f7fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acb4853c9f383c2f9956ba6d672c1c45.png)
(2)若点Q的运动速度与点P的运动速度不相等,当点Q的运动速度为多少时,能够使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/983add910c8e09954f164a5e87d1f7fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acb4853c9f383c2f9956ba6d672c1c45.png)
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2 . 如图,B、F、C、E在同一直线上,
,且
.求证:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/14/e059ea6b-2efe-48da-b375-5b9174f7e20a.png?resizew=206)
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59df4d0fae70992ce91db6e391aa2171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd81adb13f5a7550b0f94f770900a613.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/14/e059ea6b-2efe-48da-b375-5b9174f7e20a.png?resizew=206)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac61f3477e623aa4f924a82bd7a06ce4.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5adaae99b4ac308549134169e69247a6.png)
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3 . 如图,
是
的中点,
,
,
,求
的度数.
![](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/5b84c9d873289f99d8eb733d12899280.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41bef89ac0dd5ae192cd9c7222d5041b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90a1869f346e44059403d2208df84cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35803969509655f72b4118503ae1c966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/4/dff3ad48-1cec-4b47-8057-369c2eabba55.png?resizew=165)
您最近一年使用:0次
4 . 如图,已知
中,
,点D为
的中点.如果点P在线段
上以3cm/s的速度由点B向C点运动,同时,点Q在线段
上由点C向A点运动.
(1)若点Q的运动速度与点P的运动速度相等,经过1秒后,
与
是否全等,请说明理由.
(2)若点Q的运动速度与点P的运动速度不相等,当点Q的运动速度为多少时,能够使
与
全等?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2eeea3b4d8405e161870998edf29dea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/26/28f83613-d768-45b2-b93e-b2a5efe15a4a.png?resizew=100)
(1)若点Q的运动速度与点P的运动速度相等,经过1秒后,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/983add910c8e09954f164a5e87d1f7fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acb4853c9f383c2f9956ba6d672c1c45.png)
(2)若点Q的运动速度与点P的运动速度不相等,当点Q的运动速度为多少时,能够使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/983add910c8e09954f164a5e87d1f7fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acb4853c9f383c2f9956ba6d672c1c45.png)
您最近一年使用:0次
2023-11-03更新
|
94次组卷
|
3卷引用:山东省临沂市河东区东兴实验学校2023-2024学年八年级上学期10月月考数学试题
名校
5 . 如图,把两根钢条的中点连在一起,可以做成一个测量工件内槽宽的工具(卡钳),在图中由三角形全等可知,测量工件内槽宽
,那么判定
的理由是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/722f46e8f891db9c7b98cae6da70acf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b1cf9a65830c7868b9fe59b32cf47cf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/3/8e8db7a1-1a0e-42cc-9b84-b9cd076937c9.png?resizew=155)
您最近一年使用:0次
2023-11-02更新
|
151次组卷
|
3卷引用:广东省广州市铁一中学2022-2023学年八年级上学期期中数学试题
6 . 如图,在平面直角坐标系中,A,B两点的坐标分别是点
,点
,且a,b满足:
.
(1)求
的度数;
(2)若点M为
的中点,等腰直角
的腰
经过点M,
,连接
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/296c31eaede57efe89ffb83f02ad4622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5612d598e27ac2ce0ab89fb63538bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d98bb89086fdf59c1b5255e974f684d5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/9/0204ff5e-b59c-4552-8d75-5c4fb52b2251.png?resizew=154)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2bc29145f6e7557711c34b443bd5e84.png)
(2)若点M为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f43dd27150098f6dfabfdac92da27e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e1b6bffbce78095398970f8babab65a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a911094b632b548cc5665f0d32b7ae51.png)
您最近一年使用:0次
7 . 如图,Y已知
中,
,
,
,点
分别是边
上的点,且
,则
的最小值是___________
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fffa3d9c32da53b0ea0c338012ea20c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df3b2901ad26337818f75e81448ebb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6db58f1912fc3fb507438cdd6351e5f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a51949f48ee8cf746851ba779b078e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/887721a843b2dc8e947cc42d09868e33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421291381be28da4bd16560fd383b4a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d24de889b36de076a95076a05f21fa5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/30/e86a5ea2-3524-4398-bc6f-0330b4709040.png?resizew=230)
您最近一年使用:0次
8 . 如图,已知
.求证:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/1/7a81fc7a-f58a-4d92-91a3-690f90150907.png?resizew=201)
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bcac39d2daa246379e5062b93776bde.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/1/7a81fc7a-f58a-4d92-91a3-690f90150907.png?resizew=201)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc044fa38bc892bd205ad36b14be93a2.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e444739e269a94733b2b0598b559313.png)
您最近一年使用:0次
9 . 如图,在矩形
中,E为
边上一点,
平分
,F为
的中点,连接
,
,过点E作
分别交
,
于G,H两点.
(1)求证:
;
(2)求证:
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6beda2518cf76da94d7ec9a813dcfa82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1887809f4d20621eb59d38660837cc04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/9/445b9fc4-2ce1-4a84-a7a6-d6ed02f5cd3d.png?resizew=145)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3620030e8808da46df97330103827913.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c507610f462120218e2cd1894c957eb.png)
您最近一年使用:0次
名校
10 . 如图,
和
均为等腰直角三角形,
,
,
,点B在线段
上,已知
,
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c771a4feb150ad9cff8d70431c97eb17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ae2b342e86eff2390bc86d0c3519e1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d212c1709b8e72a055cf1b5381ef64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97be8206012b8d5b1402dfa5e9761196.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714cc3707bba3bfdb56e251999be8592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6fa8f76092289a3544dbfa32960c953.png)
A.![]() | B.![]() | C.![]() | D.3 |
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