1 . 如图,已知在
中,
,
,
,
是
上的一点,
,点
从
点出发沿射线
方向以每秒2个单位的速度向右运动.设点
的运动时间为
.过点
作
于点
.在点
的运动过程中,当
为______ 时,能使
.
![](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/4494a85de0be0b97a69348115aef8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb262f3529a3e84959fe594b6628c77.png)
![](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/55c24a968c73e960698a572ab01e3698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35eed9fb23f80002cc31dd57109e102a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0fa1aa5a7a5bb172ed4603f17c8b2c6.png)
您最近一年使用:0次
2 . 如图,
中,
,
,
为
延长线上一点,点
在
上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/14/22fd489f-185b-4222-8bea-47d15d61c5ba.png?resizew=166)
(1)求证:
;
(2)若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/d8ce1475f537b4ad21775bfaa16daa0c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/14/22fd489f-185b-4222-8bea-47d15d61c5ba.png?resizew=166)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39e08ae10555d1bb6f4e03f95069299b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9817d6eaf6f9454152b2891f33aaa760.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/752fa646a2d9cfca34001748445301c9.png)
您最近一年使用:0次
2023-04-02更新
|
288次组卷
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3卷引用:2023年广西南宁市西乡塘区第三十七中学中考一模数学试题
3 . 如图,
中,
,
,
,
平分
,则点
到
的距离是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/18/808fefa4-ae3e-4c22-b71f-73ff70b9ddad.png?resizew=132)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/18/808fefa4-ae3e-4c22-b71f-73ff70b9ddad.png?resizew=132)
A.3 | B.4 | C.2![]() | D.![]() |
您最近一年使用:0次
2023-02-17更新
|
249次组卷
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3卷引用:广西壮族自治区贵港市港北区港北区第六初级中学2022-2023学年八年级下学期2月月考数学试题
4 . (1)如图①,A,E,F,C四点在一条直线上,
,过点E,F分别作
,
,连接
交
于点G,若
试说明
.
(2)若将
沿
方向移动变为如图②的图形,(1)中其他条件不变,上述结论是否仍成立?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ce1475f537b4ad21775bfaa16daa0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fbbd17c89f03dbb61cd6ffdb9a0344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f2a245381e615882ee5feb7793a1df6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbd5ed17eee530c8c3cc397751bf25fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/690c06742fc47007c6a078ede7ecabf6.png)
(2)若将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0acc93490a6a784eb62201d93dd93d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/30/6eb341ab-6e38-4a15-a4f3-da4445001099.png?resizew=477)
您最近一年使用:0次
5 . 如图,在长方形
中,
平分
交
于点E,E是
的中点,则
的长为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc7ca085d8c49ba6a1fe3bbe08e55fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d34b2c6c1379ea4968962e96eba6cd18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/28/15f6644c-4dd8-4dfa-887d-d0a9a564b2b7.png?resizew=104)
您最近一年使用:0次
2023-01-27更新
|
223次组卷
|
3卷引用:广西壮族自治区贺州市平桂区2022-2023学年八年级上学期期末数学试题
6 . 如图,在正方形
中,
,
分别在边
,
上,
是等边三角形,连接
交
于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/27/4f059a0b-1375-450b-bf23-3e53dc0f49c1.png?resizew=148)
(1)求证:
;
(2)若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/27/4f059a0b-1375-450b-bf23-3e53dc0f49c1.png?resizew=148)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d96a5d40d0aea9f4398ca4d0fe9b0dd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377b5f7197e5bd1afeea4d931307956a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
您最近一年使用:0次
2022-12-24更新
|
164次组卷
|
7卷引用:2021年广西南宁市宾阳县初中毕业班第一次适应性测试数学试题
名校
7 . 如图,在
中,
平分
于点E,点
在
上,且
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a355d3313b93003158ac68d435b4a32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e6dda2a25f4632f48a7ea0e50154b56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47256452f509ebc7ff090ca5cfc88142.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e570eabbf1b9390fe78cbb37995c60f8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/21/337dce46-440b-4338-ba5a-357071a049b4.png?resizew=200)
您最近一年使用:0次
2022-12-14更新
|
583次组卷
|
28卷引用:广西壮族自治区桂林市第一中学2021-2022学年八年级下学期期中数学试题
广西壮族自治区桂林市第一中学2021-2022学年八年级下学期期中数学试题广西壮族自治区桂林市雁山区雁山中学2022-2023学年八年级下学期期中数学试题2012年苏教版初中数学九年级上1.1等腰三角形的性质与判定练习卷2014-2015学年辽宁省大石桥市水源镇二中八年级上学期段测数学试卷云南省红河州泸西县逸圃初级中学2017-2018学年八年级上学期期中考试数学试题云南省泸西县逸圃初级中学2018-2019学年八年级上学期期中考试数学试题浙教版八年级上册数学第1-6章 单元综合练习试题湖北省十堰市房县2017-2018学年八年级上学期期末数学试题北京市第十一中学2019-2020学年第二学期九年级数学居家自主学习检测诊断试题北京十一学校2019-2020学年九年级下学期4月月考数学试题湖南省怀化市鹤城区2019-2020学年八年级下学期期末数学试题河南省舞钢市2018-2019学年八年级上学期调研考试数学试题山东省德州市乐陵市实验中学2020-2021学年八年级上学期10月月考数学试题广东省惠州市江南学校2020-2021学年八年级上学期期中数学试题12.3角平分线的性质(课前)新疆吐鲁番高昌区2021-2022学年八年级上学期期中考试数学试题北京市房山区燕山地区2021-2022学年八年级上学期期中数学试题广东省佛山市2021-2022学年八年级下学期4月月考数学试题河南省南阳市镇平县2021-2022学年八年级上学期期末数学试题陕西省西安市曲江第一中学2021-2022学年八年级下学期期中数学试题黑龙江省黑河市逊克县2021-2022学年八年级上学期期末数学试题黑龙江佳木斯同江市第三中学2021-2022学年八年级上学期期中考试数学试题重庆市荣昌区荣昌区宝城初级中学2021-2022学年八年级上学期第一次月考数学试题重庆市南川区南川区第一中学校2022-2023学年八年级上学期10月月考数学试题福建省泉州市培元中学2022-2023学年八年级上学期期中考试数学试题陕西省渭南市白水县2021-2022学年八年级上学期期末考试数学试卷河南省周口市扶沟县2021-2022学年八年级上学期期末数学试题辽宁省抚顺市新抚区2022-2023学年八年级上学期期末数学试题
8 . 已知
、
分别是
内角和外角平分线,它们的交点为
,过点D作
,垂足为F点,作
,垂足为E点,连接
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](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/6d276d0010fd458383ea3dd61415e1aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01009f2f3a3476fd1efe90291083132.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/c79a833b-bc56-40d8-ac7c-a32a6fae98b6.png?resizew=151)
您最近一年使用:0次
9 . 如图,在矩形纸片
中,
,
,M是
上的点,且
,将矩形纸片
沿过点M的直线折叠,使点D落在
上的点P处,点C落在点
处,折痕为
,当
与线段
交于点H时,则线段
的长是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/2b3b4b41-d695-45cd-8029-1ddec6130192.png?resizew=151)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59efa8fd3ef37ad668263448608fb6b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a57b2c928c267d3fb111dabfda8235c1.png)
![](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/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7096fdcee49451970e84214dee5c2e5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdae78f4d3b8d8213ac3ac9a9567eb5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/2b3b4b41-d695-45cd-8029-1ddec6130192.png?resizew=151)
A.3 | B.![]() | C.4 | D.![]() |
您最近一年使用:0次
名校
10 . 已知
,
平分
,D为
上一点,B为
上一点.
![](https://img.xkw.com/dksih/QBM/2022/11/11/3107452180144128/3124253906001920/STEM/c410ebb985c6466ea4b2c268431cf8a4.png?resizew=312)
(1)如图1所示,若
,
,求证:
;
(2)如图2所示,若
,则(1)中的结论是否仍然成立?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358c69b4f6c350c35d19d33c69f2a2a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358c69b4f6c350c35d19d33c69f2a2a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://img.xkw.com/dksih/QBM/2022/11/11/3107452180144128/3124253906001920/STEM/c410ebb985c6466ea4b2c268431cf8a4.png?resizew=312)
(1)如图1所示,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7231ec83386010f305e121ce60e23d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3798a74058ec4bc40b6d9b5d268c359b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd1ddf4296a057936b4e3ee1a96866e5.png)
(2)如图2所示,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714088ba5f1f3b6359e2977a49e62b05.png)
您最近一年使用:0次
2022-12-05更新
|
161次组卷
|
16卷引用:广西南宁三中初中部2018-2019学年下学期八年级开学考试数学试题
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