如图,在
中,D为
边上一点,
,
.求证:
![](https://img.xkw.com/dksih/QBM/2022/12/22/3136481178238976/3137816997281792/STEM/6d8c39132f00489db5075894c7d9dfd2.png?resizew=193)
(1)
.
(2)
平分
.
![](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/8aa2da622fcdc28ee85c08c5b0a4e3af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06a2ab6940dca62be1f3b2b5f8531990.png)
![](https://img.xkw.com/dksih/QBM/2022/12/22/3136481178238976/3137816997281792/STEM/6d8c39132f00489db5075894c7d9dfd2.png?resizew=193)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f03a43549ab71f0998fffbcb48397b00.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3e081637bcea5368cc72370bae283b.png)
22-23八年级上·山西大同·阶段练习 查看更多[5]
山西省大同市第三中学2022—2023学年八年级上学期12月月考数学试卷四川省南充市顺庆区南充高级中学2022-2023学年八年级上学期期末数学试题(已下线)专题1.13 角平分线(知识讲解)-2022-2023学年八年级数学下册基础知识专项讲练(北师大版)广东省茂名市电白区第三中学2022-2023学年八年级下学期第一次月考数学试题广东省梅州市丰顺县颍川中学2022-2023学年八年级下学期开学考试数学试题
更新时间:2022-12-24 16:07:56
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相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】已知
,
,
.现将
和
按如图(1)、图(2)的方式摆放,连接
.
![](https://img.xkw.com/dksih/QBM/2023/3/15/3194972272369664/3196683512209408/STEM/990f5578969245ed9f87da5ac0019d56.png?resizew=189)
![](https://img.xkw.com/dksih/QBM/2023/3/15/3194972272369664/3196683512209408/STEM/4ee77af5468049e99fd55f54e5ee724d.png?resizew=169)
(1)如图(1).
①若
,请直接写出
的度数;
②若
平分
,求证:
;
(2)如图(2),连接
,若
,试在线段
上确定一点
,连接
,使得
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d66193684f7dd516b33f76fcb522ea19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2da1d50433aecf541991fd0f01773cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2689f0ce5ab3467d8214794d8acb2bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/2023/3/15/3194972272369664/3196683512209408/STEM/990f5578969245ed9f87da5ac0019d56.png?resizew=189)
![](https://img.xkw.com/dksih/QBM/2023/3/15/3194972272369664/3196683512209408/STEM/4ee77af5468049e99fd55f54e5ee724d.png?resizew=169)
(1)如图(1).
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65c5840e0454fdec7d2158072c43b8db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b871a762469393cdd22f15aa49ebb8f9.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb8eca20ce2c918ea4034ea15210c7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9953b7b5c647641edbec4c2ab90a65f4.png)
(2)如图(2),连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e853b053d23277b0874566c0e9fab77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14a5054f557361ae5ee6006881c89ae9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed2884b46c0b3b258154b393777e966a.png)
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解答题-问答题
|
适中
(0.65)
【推荐2】如图所示,已知
中,
厘米,
厘米,点
为
的中点.如果点
在线段
上以
厘米
秒由
出发向
点运动,同时点
在线段
上以
厘米
秒由点
出发向
点运动.设运动时间为
秒.
![](https://img.xkw.com/dksih/QBM/2022/9/16/3067786353680384/3128644104626176/STEM/d0f283a3765e450eac2cdc8a21b6e564.png?resizew=124)
(1)用含
的式子表示第
秒时,
______厘米,
______厘米.
(2)如果点
与点
分别从
,
两点同时出发,经过
秒后,
与
是否全等?请说明理由.
(3)如果点
与点
分别从
,
两点同时出发,经过几秒后,
是以
为底的等腰三角形?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f138deab9e5a4baaada287ed1a78df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ebb33adb2310a6e03918761e68204a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4333bb203d02814c146ed587b69ea69d.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4333bb203d02814c146ed587b69ea69d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://img.xkw.com/dksih/QBM/2022/9/16/3067786353680384/3128644104626176/STEM/d0f283a3765e450eac2cdc8a21b6e564.png?resizew=124)
(1)用含
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9985eaef9e31b243d5aaf89b71f66075.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1772209a569f87d0539b5d7871d0834.png)
(2)如果点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/983add910c8e09954f164a5e87d1f7fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e87b2f781cafa7989d81f9bf8c42b150.png)
(3)如果点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e87b2f781cafa7989d81f9bf8c42b150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
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解答题-证明题
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适中
(0.65)
名校
【推荐1】如图,在△ABC和△ADE中,AB=AD,AC=AE,∠BAD=∠CAE,DE分别交BC,AC于点F,G,连接AF.
(1)求证:∠C=∠E;
(2)若∠CAE=24°,求∠AFB的度数.
(1)求证:∠C=∠E;
(2)若∠CAE=24°,求∠AFB的度数.
![](https://img.xkw.com/dksih/QBM/2021/11/26/2859401515335680/2860200258682880/STEM/0fb598566d7f4396b9547c3995bc462d.png?resizew=264)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,在
中,
,点P为边
上的一点,
,且
,点C关于直线
的对称点为D,连接
,又
的
边上的高为
:
的大小;
(2)判断直线
是否平行?并说明理由;
(3)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c42ed2e5bd5a0f033e24008697bf4963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cacb947622647cbd8e85116043e290d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/319b1b275befb2dfc896574ab9d8b51b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9524e3810e06dc781285f1289e75d653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fbf1667b21a273bf5dd007d65eeda7c.png)
(2)判断直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8bb78bcf064574c41018ea993129b66.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da8ec82767aef5023ed188f7cca983a9.png)
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