已知在矩形
中,
的平分线
与
边所在的直线交于点E,点P是线段
上一定点(其中
)
(1)如图1,若点F在
边上(不与D重合),将
绕点P逆时针旋转
后,角的两边
分别交射线
于点H、G.
①求证:
;
②探究:
之间有怎样的数量关系,并证明你的结论.
(2)拓展:如图2,若点F在
的延长线上(不与D重合),过点P作
,交射线
于点G,你认为(1)中
之间的数量关系是否仍然成立?若成立,给出证明;若不成立,请写出它们所满足的数量关系式,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa783be67f9c5bb06c08796ce22f82c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/720acd70f038c727d4d98461ee640df9.png)
(1)如图1,若点F在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8f8ef91a793c6d655a3090a7286dc48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7a0387fc1258f31e44a10068c0ccfd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25ee627d9dd08ccdfe236c050d2cbee9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f96461af9193d5d7867ddf8fcbefcaec.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8aba7cba8228e1aac48fb030f604ce.png)
②探究:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/842c3d47d9a2d3de5e77f2f051990917.png)
(2)拓展:如图2,若点F在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/066c4b18996ebf00c72450958872ac65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f96461af9193d5d7867ddf8fcbefcaec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7646f83a7904211cc3fa0dff6643c80.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/1/fb13594c-9424-44e9-b6ac-2efd50c651e5.png?resizew=334)
2016·福建南平·中考真题 查看更多[8]
2016年初中毕业升学考试(福建南平卷)数学四川省达州地区2017年中考数学模拟试卷2017年四川省达州市中考数学模拟试卷(已下线)2年中考1年模拟 第七篇 专题复习篇 专题39 变式猜想问题(已下线)决胜2018中考压轴题全揭秘 专题16 四边形问题(已下线)决胜2018中考压轴题全揭秘 专题28 探究型问题浙江省永康市2018-2019学年八年级下学期期末考试数学试题江西省吉安市吉安县2023-2024学年九年级上学期期末数学试题
更新时间:2016-12-06 13:56:14
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【推荐1】已知:如图,在△ABC中,AD⊥BC,垂足是D,E是线段AD上的点,且AD=BD,DE=DC.
⑴ 求证:∠BED=∠C;
⑵ 若AC=13,DC=5,求AE的长.
⑴ 求证:∠BED=∠C;
⑵ 若AC=13,DC=5,求AE的长.
![](https://img.xkw.com/dksih/QBM/2017/10/19/1798691471114240/1799341587472384/STEM/ce622cb019a54d588b00511bc5b726b0.png?resizew=141)
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【推荐2】如图,已知AB=DC,AC=BD,求证:∠B=∠C.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/20/509d6a46-87cd-4dea-a152-5493df2953ac.png?resizew=180)
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【推荐1】已知,在
中,
,D为边
上的点,B为
延长线上的一点,连接
交
于点F,且
.
(1)如图1,求证:
;
(2)如图2,过点D作
交
于点G,若
,
,在不添加任何辅助线的情况下,直接写出图2中的四条线段(线段
除外),使写出的每条线段都与线段
相等.
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46ce838f38419e8781d63b3417cac5e4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/22/67cb4f79-769b-4bee-9623-06347cc90a66.png?resizew=230)
图1 图2
(1)如图1,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421291381be28da4bd16560fd383b4a9.png)
(2)如图2,过点D作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/821de7405435bd9caa89e5afc8f6ec72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2b3c50fd5788845d1090c9c6a97a90b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7322382eecd41e1348226680a830da9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
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【推荐2】已知:如图,在
中,
,
于点D,E是
上的一动点,点F在直线
上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/23/bd45a40a-9ff7-4ca1-8a83-64446cab1878.jpg?resizew=347)
(1)求证:
;
(2)如图1,求证:
;
(3)如图2,如果
,
,当
正好平分
时,直接写出
的长为_____.(用含m的代数式表示)
![](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/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87985f581298fcd7341c9f27ce60a939.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/23/bd45a40a-9ff7-4ca1-8a83-64446cab1878.jpg?resizew=347)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88573a6c979d89c22945b818c8b9d0ab.png)
(2)如图1,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00334461f72c07c50e1d46679eb98378.png)
(3)如图2,如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bb79c82e2ecee4cce178f5e9d79d39e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15fcde639611cd140a6ffcd336bc5e27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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【推荐1】如图,DP是⊙O的切线,D为切点,弦AB
DP,连接BO并延长,与⊙O交于点C,与DP交于点E,连接AC并延长,与DP交于点F,连接OD.
![](https://img.xkw.com/dksih/QBM/2022/1/27/2903269758500864/2904860050743296/STEM/e551f075a84a4e8f9cfdd0a849fe751b.png?resizew=181)
(1)求证:AF
OD;
(2)若OD=5,AB=8,求线段EF的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb31ef428bd9de9bc875b343feded3c7.png)
![](https://img.xkw.com/dksih/QBM/2022/1/27/2903269758500864/2904860050743296/STEM/e551f075a84a4e8f9cfdd0a849fe751b.png?resizew=181)
(1)求证:AF
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb31ef428bd9de9bc875b343feded3c7.png)
(2)若OD=5,AB=8,求线段EF的长.
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解答题-作图题
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【推荐2】如图,在矩形ABCD中,
,
,E是AB上一点,连接CE,现将
向上方翻折,折痕为CE,使点B落在点P处.
![](https://img.xkw.com/dksih/QBM/2019/9/20/2294777844187136/2295073226809344/STEM/78360b82efa848358ff0c9b57520ba4d.png?resizew=77)
(1)当点P落在CD上时,
_____;当点P在矩形内部时,BE的取值范围是_____.
(2)当点E与点A重合时:①画出翻折后的图形(尺规作图,保留作图痕迹);②连接PD,求证:
;
![](https://img.xkw.com/dksih/QBM/2019/9/20/2294777844187136/2295073226809344/STEM/3e6bef1a58dd4aa69c960670e21bfe69.png?resizew=74)
(3)如图,当点Р在矩形ABCD的对角线上时,求BE的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b1927db96d84f27197b5a654b622f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bdf82f2b3ac77ee7b9b35aebe0dd83f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://img.xkw.com/dksih/QBM/2019/9/20/2294777844187136/2295073226809344/STEM/78360b82efa848358ff0c9b57520ba4d.png?resizew=77)
(1)当点P落在CD上时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f76e37d6e6b182896ccaaa187cfe07.png)
(2)当点E与点A重合时:①画出翻折后的图形(尺规作图,保留作图痕迹);②连接PD,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b6a8fedaab6edff3cb1c9e5c6b7b9d.png)
![](https://img.xkw.com/dksih/QBM/2019/9/20/2294777844187136/2295073226809344/STEM/3e6bef1a58dd4aa69c960670e21bfe69.png?resizew=74)
(3)如图,当点Р在矩形ABCD的对角线上时,求BE的长.
![](https://img.xkw.com/dksih/QBM/2019/9/20/2294777844187136/2295073226809344/STEM/527ab5db69fb4a4683cdb5689c14b7b5.png?resizew=74)
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