1 . 【问题探究】
(1)如图1,在四边形中,
,点
为
上一点,连接
,求证:
;
(2)如图2,在四边形中,
,点
为
上一点,连接
,
,试判断
与
之间的数量关系,并说明理由;
【问题解决】
(3)如图3,四边形是赵叔叔家的果园平面示意图,点
为果园的一个出入口(点
在边
上),
为果园内的两条运输通道(通道宽度忽略不计),经测量,
,
米,赵叔叔计划在
区域内种植某种果树,并沿
修建一条安全栅栏,为提前做好修建安全栅栏的预算,请你帮赵叔叔计算出
的长度.
您最近一年使用:0次
2 . 问题提出
(1)如图①,在四边形
中,
,点
在线段
上,连接
,
,
,使得
,若
,则图中与
相等的线段是______;
问题探究
(2)如图②,在
中,点
是
上一点,
,
,
,
,求点
到边
的距离;
问题解决
(3)如图③,有一块矩形
板材,
,
,李师傅因制作一模型需要一个形状特殊且面积为
的四边形
,已知点
在
边上,
,现在还需要在边
,
上确定点
,点
,使得
,且
.李师傅通过测量采用了如下操作:分别在
和
上测量
和
的长度,确定为点
,点
,连接
、
和
.请问,按照李师傅的作法,裁得的四边形
是否符合要求?请证明你的结论.
(1)如图①,在四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea6c32ec954e3a3e0ce8d74b1e4d321c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f46f19939f38833f9152942f8241b7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a702c324e0c76150540c3d32df802077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
问题探究
(2)如图②,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/357d9412cb6b277a3e317d99135ab64b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56ee81929c987732fcb379802eeef7a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ca4d3482a45e633ecf428458611a535.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080ca48cd27d4bf9d9ef084b558fc17a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
问题解决
(3)如图③,有一块矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2aefaf280db04f252cde649047eea349.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e0e74c3c938f949c5944f9c0ce7830.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/094cd5c303b4eb5f088e9fbba462efba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3270db2b36dfb7b7ba5684a6ca4b8b2.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/860ba88dabb31964116d86c0c108a91f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f32da4cdd5d15010b3599c86e259405d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3c8d765a6f39e42744c50c99fbca268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7da9429d1238ea3e979dd0de49dd2b48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0530dbcf60b82add6155095b4860db4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3270db2b36dfb7b7ba5684a6ca4b8b2.png)
![](https://img.xkw.com/dksih/QBM/2023/4/15/3217046166667264/3240399567233024/STEM/a2d15e59beea4824830b492f1abeecc2.png?resizew=420)
您最近一年使用:0次
3 . 问题提出
(1)如图①,
垂直平分线段
,
交
于点Q,连接
,
,
,点M在线段
上,连接
,若
,则
______°;
问题探究
(2)如图②,在
中,延长
至E,使得
,点D在
上,连接
,
,求证:
;
问题解决
(3)如图③,有一块足够大的四边形空地
,
.现要规划出一个三角形
区域用来修建小型文化广场,其余地方铺上草坪,其中点F,G分别在
,
上,点E是
的中点,
,
米,
米,为方便市民出入广场,沿
修建一条笔直的通道(宽度不计),请你求出通道的长度
.
(1)如图①,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d462ecbfd4c6937d4a58725b809df966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35109b72ebab4198da85a390a5a1b9e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fca45e296d4327d85296c1a0c797c9e.png)
问题探究
(2)如图②,在
![](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/ddc7897e3f49075943704f4dbef82e5b.png)
![](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/b673d218777b4d1f6c3ecf263bf11713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a130e7c109e2196b97e1a76281bf3cf6.png)
问题解决
(3)如图③,有一块足够大的四边形空地
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9561465549f952ac2890cfea5e7745fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe8a84ca3a13f82aff1a022edc66065.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e458dd1ce1c8dcdc2becac146d9dc231.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0adf842efbdd8dc2905556854a4b81fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a12acf41ee592684eef65e38bc330ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/21/f507db75-6349-4168-9b48-7998cb181796.png?resizew=513)
您最近一年使用:0次
2023-03-16更新
|
566次组卷
|
4卷引用:2023年陕西省榆林市第十中学中考九年级第一次模拟考试数学试题
2023年陕西省榆林市第十中学中考九年级第一次模拟考试数学试题(已下线)2023年陕西省一模(几何综合)(已下线)2024年辽宁省初中学业水平考试数学试卷(样卷)变式题20-23题2024年辽宁省营口市大石桥市第四初级中学九年数学第一次模拟试题(新中考)
4 . 1805年,法军在拿破仑的率领下与德军在莱茵河畔激战.德军在莱茵河北岸点Q处,如图所示,因不知河宽,法军大炮很难瞄准敌营.聪明的拿破仑站在南岸的点O处,调整好自己的帽子,使视线恰好擦着帽舌边缘看到对面德国军营Q处,然后他保持原来的观察姿态,一步一步后退,一直退到点B处,发现自己的视线恰好落在他刚刚站立的点O处,让士兵丈量他所站立的位置B点与O点之间的距离,并下令按照这个距离炮轰德军.试问:法军能命中目标吗?请说明理由.(注:
,点B、O、Q在一条直线上)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f406d96b130d98e5384c4de5e8417f9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/11/9dca6056-9e67-4f59-9815-c4535e22056e.png?resizew=207)
您最近一年使用:0次
2022-12-25更新
|
231次组卷
|
9卷引用:陕西省榆林市2021-2022学年七年级下学期期中考试数学试题
陕西省榆林市2021-2022学年七年级下学期期中考试数学试题贵州省遵义市第四初级中学2022-2023学年八年级下学期第三次月考数学试题(已下线)第03讲 全等三角形的综合应用(知识解读+真题演练+课后巩固)-2023-2024学年八年级数学上册《知识解读·题型专练》(人教版)(已下线)第05讲 全等三角形的综合应用(知识解读+真题演练+课后巩固)-2023-2024学年八年级数学上册《知识解读·题型专练》(浙教版)(已下线)专题12.6 全等三角形章末八大题型总结(培优篇)-2023-2024学年八年级数学上册举一反三系列(人教版)(已下线)专题14.6 全等三角形章末八大题型总结(培优篇)-2023-2024学年八年级数学上册举一反三系列(沪科版)(已下线)专题13.12 全等三角形章末十三大题型总结(培优篇)-2023-2024学年八年级数学上册举一反三系列(华东师大版)(已下线)专题1.12 三角形的初步知识章末十六大题型总结(培优篇)-2023-2024学年八年级数学上册举一反三系列(浙教版)(已下线)专题1.6 全等三角形章末八大题型总结(培优篇)-2023-2024学年八年级数学上册举一反三系列(苏科版)
5 . 如图,在△ABC中,AB=AC,D是AC边的中点,过A作AE⊥BD于点E,AE的延长线交BC于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/9/1698ab84-b44e-48ad-a154-ab7856a95516.png?resizew=232)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/9/a92cf902-982a-471b-a642-b1719450a140.png?resizew=229)
(1)如图1,若AF=CF,求证:AC2=CF⋅BC;
(2)如图1,过点F作FG∥BD交AC于点G,若
,求
的值;
(3)如图2,若∠BAC=90°,求证:BF=2CF.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/9/1698ab84-b44e-48ad-a154-ab7856a95516.png?resizew=232)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/9/a92cf902-982a-471b-a642-b1719450a140.png?resizew=229)
(1)如图1,若AF=CF,求证:AC2=CF⋅BC;
(2)如图1,过点F作FG∥BD交AC于点G,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9307beadc580f0bacf70ba7f806bab7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd01a4cbd347fce1a7414eb9fa73d16.png)
(3)如图2,若∠BAC=90°,求证:BF=2CF.
您最近一年使用:0次
2022-08-05更新
|
123次组卷
|
2卷引用:陕西省榆林市神木市2021-2022学年九年级上学期期中考试数学试题
6 . (1)如图1,
是正方形
的对角线,
是
上一点,
,
,交
于点
,
,交
于点
,猜想
与
的数量关系是__________;
(2)将图1中的
按顺时针旋转一定角度到图2的位置,使
交
于点
,
交
于点
,猜想
与
的的数量关系,并证明;
(3)如图3,将图2的正方形
换成菱形
,
,
是
上一点,
,使
交
于点
,
交
于点
,且
,求四边形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cb4eb87fd9c474fea913e4b68818abd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3ededa0e19291b5b7eb9884af5bdeb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3a6922808e9b59352c25c341cf23851.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
(2)将图1中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45a8a837c11c07073da3ff751d70278.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
(3)如图3,将图2的正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/478aa2c38a227544587d80b642136714.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
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2021-08-05更新
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2卷引用:陕西省榆林市绥德县2021-2022学年九年级上学期期中考试数学试题
7 . 阅读下列材料,并解答其后的问题:
定义:有一组邻边相等且有一组对角互补的四边形叫做等补四边形.
如图1,若AB=AD,∠A+∠C=180°,则四边形ABCD是等补四边形.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/28/da64df72-af52-4e45-ba1f-dac313aebffc.png?resizew=586)
(1)理解:如图2,已知Rt△ABC中,∠ACB=90°.请用尺规作图法作出点D,使得以A、B、C、D四点为顶点的四边形是等补四边形;(只需作出一个满足条件的点D即可.要求不用写作法,但要保留作图痕迹.)
(2)探究:如图3,等补四边形ABCD中,AB=BC,∠A+∠C=180°,BD是对角线.求证:BD平分∠ADC;
(3)运用:将斜边相等的两块三角板如图4放置,其中含45°角的三角板ABC的斜边与含30°角的三角板ADC的斜边重合,B、D位于AC的两侧,AB=BC=4,连接BD.则BD的长为 .
定义:有一组邻边相等且有一组对角互补的四边形叫做等补四边形.
如图1,若AB=AD,∠A+∠C=180°,则四边形ABCD是等补四边形.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/28/da64df72-af52-4e45-ba1f-dac313aebffc.png?resizew=586)
(1)理解:如图2,已知Rt△ABC中,∠ACB=90°.请用尺规作图法作出点D,使得以A、B、C、D四点为顶点的四边形是等补四边形;(只需作出一个满足条件的点D即可.要求不用写作法,但要保留作图痕迹.)
(2)探究:如图3,等补四边形ABCD中,AB=BC,∠A+∠C=180°,BD是对角线.求证:BD平分∠ADC;
(3)运用:将斜边相等的两块三角板如图4放置,其中含45°角的三角板ABC的斜边与含30°角的三角板ADC的斜边重合,B、D位于AC的两侧,AB=BC=4,连接BD.则BD的长为 .
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2021-07-28更新
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2卷引用:2023年陕西省榆林市子洲县希望中学中考数学模拟试卷