1 . 在
中,
,
,
于点D,点E,F分别在
上,且
,
交于点N.
______;
(2)如图2,当点E在
边上时,
①依题意补全图2;
②
的值是否发生变化,请说明理由.
![](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/3f81e24376a13d648c2ed0dc73bc710e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a6d50515fc65885d44cd6a3c41e6a7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1394d1cda548dae1101247802e80f60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15829ca2d0c39f9eadafbbd2b5c5cbc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40c428fac21afabc9ec50c5d8c14d73f.png)
(2)如图2,当点E在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
①依题意补全图2;
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb28319ccb31e648683fa82503296f5c.png)
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名校
2 . 如图,直线l上有三个正方形a、b、c,若a、b的面积分别为2和5,则c的面积为____________ .
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3 . 对于平面直角坐标系
中的点P和图形M,给出如下定义:将图形M绕P顺时针旋转
得到图形N,当图形M与图形N有公共点时,我们称点P是图形M的“关联点”.已知
,
.
的“关联点”,在点
,
,
中,则满足条件的点是__________;
(2)若直线
上存在点P,使点P为线段
的“关联点”,直接写出b的取值范围;
(3)以
为圆心,1为半径的
,若线段
上存在点P,使点P为
的“关联点”,直接写出t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2beb91f10d2d8f2aa0dcc3f5cd1598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baaf13627819890607661d8eb55efa83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6f3aec1dc12dc085258842c804e597b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a42795469ed8ba12729fcebd710e8795.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29f1b10c76be8f49c88efa7ae37c77ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66953e2c52732fca1af921aef43bc0fa.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9bd144e0e96e4236a14523e0729cacb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
(3)以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffb06e9495161690484b259410698660.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9347ab0d001ed7e8f51f9886ce88ac64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9347ab0d001ed7e8f51f9886ce88ac64.png)
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4 . 如图,在
中,
是
边上一动点(不与B,C重合),
于点E.设
给出下面三个结论:
①
②
③![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bb2cd7708a80240baf7170418b46f93.png)
上述结论中,所有正确结论的序号是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d5feeb31d9517d407e79a2ec8ff7872.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a9a8a463f2a4ebede7321d4d461f235.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be7a426128a27cfc810f87b4aca51960.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a8a7ddd9add874305c19088bd2263ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bb2cd7708a80240baf7170418b46f93.png)
上述结论中,所有正确结论的序号是( )
A.①③ | B.②③ | C.② | D.①②③ |
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名校
5 . 如图,在
中,
,点D是
的中点,连接
,过点B作
,过点C作
,
相交于点E.
是菱形;
(2)过点D作
于点F,交
于点G,若
,求
的长.
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b41f2f95d643629321deb6e905c4f1ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28971fe3e3f9d3849400e98b46fc3ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1addb345549acae4fe1ffe338516d25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b0861a397742dd3b40ab10488e7fa3e.png)
(2)过点D作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1893d78af450a5fa09810537adc2dfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17698c8570edfe7a2ecca24a424f4b07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
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名校
6 . 如图,在矩形
中,将
沿对角线
翻折,点
落在点
处,
与
交于点
.若
,
,则
的长为____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2036191be2322003aaee6bb411868327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/65fc998d33cdf37c272f79cfd64b7b99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40560ea08d6cd8c1d4d9661ee6faaa3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
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7 . 如图,在平面直角坐标系中,矩形
的顶点A,B,C的坐标分别为
,
,
,
轴,则点D的坐标为__ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c44e9121523333fd108430ef5ea87058.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ced4353999faf0854fe55e35a244842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d257186dd9f6c5236742db3f28d318fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/198a7f2708b1cf3a54629903d575e19d.png)
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8 . 如图,在平行四边形
中,点E为
边的中点,
于点F,G为
的中点,分别延长
,
交于点H,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8689d619c2508c9000531fc1b8f1f21c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c10122bed4f1cd94e2b1abd9de3677f.png)
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2024-05-23更新
|
229次组卷
|
3卷引用:2024年北京市清华大学附属中学中考三模数学试题
9 .
中,
,
,
平分
,过点
作
于点
,
是
的中点,连接
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/404728d0ea2699c71e674f30dd984abd.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b7bf9cb6d48fda93567916d053bbbd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7b44bed0cbaaf920a5c76c42889f63f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c90da0cd2708481057fe19acebf2ec7.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/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/404728d0ea2699c71e674f30dd984abd.png)
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2024八年级下·北京·专题练习
10 .
中,
,
平分
交
于点
,
交
于点
,已知
,
.请判断线段
和
的大小,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7281b641656a5992abaafb4190ca9afc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80b4c9fab3f6dc6f613f1d4d8a1bfc9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4da037fe7fa1dff1116c17df53a99f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a20e5d585fbf903ee5affa6d083ab95f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c7c5675d8c687200645270dbfba9083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a665df324c530f22911ebfc3cb300ec2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
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