1 . 如图,折叠等腰三角形纸片
,使点C落在边
上的点F处,折痕为
.
,则
度;
(2)在(1)的条件下,如果
,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1088baebf01198442f70fb16589eceb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e80371754b2bb6259920dd580ba24f37.png)
(2)在(1)的条件下,如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de3a4544442abd89f46311dc223c4bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32217457c4e96e2ef155cf15c1b65d97.png)
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2 . 如图,点
,
分别在等边三角形
的边
,
上,将
沿直线
翻折,使点
落在
处.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be20693f95fae6533f4462571f44a443.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/7bef5239ddbb0972700ce01daf9ee7cf.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/1f2281cb6df0c3c518ce5ed19a02b57e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89639f8e82ba8d901e2d7a669d840ab4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be20693f95fae6533f4462571f44a443.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/8/812f3fa4-598f-4369-b3e0-0314dc2676fb.png?resizew=147)
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3 . 如图,将
沿着
对折,点A落到
处,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce2a8bf5e05a07c93a7104839fc21849.png)
_______ 度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0742e4f976c1580301dd6600313c0e3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce2a8bf5e05a07c93a7104839fc21849.png)
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4 . 如图,在
中,
,
是
上一点.将
沿
折叠,使点
落在
边上的点
处,且满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afde09d82ae96f00c135732baee64776.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8117b8e89b9aa4ed51fbaa8df8381c25.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/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32fe894c4e3a12bc67bd7eceaa658b60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afde09d82ae96f00c135732baee64776.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/8/e5773c39-f5b5-4581-b355-8262636548a9.png?resizew=99)
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5 . 如图,把
的
翻折,使顶点
恰好与边
上的点
重合,折痕为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65f24741da86b9722bd2e924e63e4f1d.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e702e136211878dce558e0457f15df63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65f24741da86b9722bd2e924e63e4f1d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/ad8505fd-6db3-4758-b879-2c3c217e8b75.png?resizew=150)
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2024-01-07更新
|
153次组卷
|
2卷引用:河南省周口市2023-2024学年八年级上学期期中数学试题
6 . 如图所示,现有一张
纸片,点D,E分别是
边上两点,若沿直线
折叠.
(1)如果折成图(1)的形状,使点A的对应点
落在
上,则
与
的数量关系是_______;
(2)如果折成图(2)的形状,猜想
与
的数量关系,并说明理由;
(3)如果折成图(3)的形状,猜想
,
和
的数量关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/7/9158584d-bcc5-48f4-940d-15405fa2fdd9.png?resizew=514)
(1)如果折成图(1)的形状,使点A的对应点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b69d40b75d582c4b8ffa2369af1d41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
(2)如果折成图(2)的形状,猜想
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4678ff1b3ea3bd09ed3494a0efe31c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
(3)如果折成图(3)的形状,猜想
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b69d40b75d582c4b8ffa2369af1d41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d57899ad4774aed9ccc7bd23db72153.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
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2024-01-07更新
|
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4卷引用:贵州省贵阳市花溪区花溪区高坡民族中学2023-2024学年八年级上学期10月月考数学试题
贵州省贵阳市花溪区花溪区高坡民族中学2023-2024学年八年级上学期10月月考数学试题山东省枣庄市滕州市鲍沟镇鲍沟中学2023-2024学年八年级上学期期末数学模拟试题河南省信阳市罗山县2023-2024学年八年级上学期期末数学试题(已下线)七年级数学期末必刷题02(常考题,50题22种题型)-2023-2024学年七年级数学下学期期末考点大串讲(苏科版)
7 . 如图,
和
是
分别沿着
边翻折
形成的,若
,则
的度数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/7/c1dd69ad-af98-4003-80f4-b422af392eaa.png?resizew=152)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc727c642cbc2181476b7dd8eca471e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80651f797ab9dccfd7163c605b091ad5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5dc62e10004e73908091338362917da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfe639eab78eafd2d40ea70aa5d3f21d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b8e5700a930da846373556c07a3e1ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b69d40b75d582c4b8ffa2369af1d41.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/7/c1dd69ad-af98-4003-80f4-b422af392eaa.png?resizew=152)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
8 . 如图,
沿
折叠使点A落在点
处,
分别是
平分线,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bafc433064387fd004b260035b7a23f5.png)
_______
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79f6bec0d2dab9b9efedfe86d1159b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb4bb11c4e82413bac2b77dceae7b41d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/883bb249a4df23b42ca2baef773d1122.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bafc433064387fd004b260035b7a23f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
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8卷引用:江苏省扬州市江都区2020-2021学年七年级下学期期末数学试题
江苏省扬州市江都区2020-2021学年七年级下学期期末数学试题(已下线)沪科版2021-2022学年八年级数学上册第15章 轴对称图形和等腰三角形专题16 轴对称图形与垂直平分线(专题强化-基础)四川省绵阳市东辰国际学校2022-2023学年八年级上学期超越杯数学试题(已下线)专题7.33 平面图形的认识(二)(折叠问题)(巩固篇)(专项练习)-2022-2023学年七年级数学下册基础知识专项讲练(苏科版)江苏省盐城市亭湖区盐城景山中学2022-2023学年七年级下学期期末数学试题(已下线)江苏七年级下期末真题精选(压轴60题18个考点分类专练)-【满分全攻略】2022-2023学年七年级数学下学期核心考点+重难点讲练与测试(苏科版)(已下线)专题7.33 平面图形的认识(二)的折叠问题(分层练习)(基础练)-2023-2024学年七年级数学下册基础知识专项突破讲与练(苏科版)(已下线)江苏省七年级下学期期中真题必刷压轴60题(32个考点专练)-2023-2024学年七年级数学下学期考试满分全攻略高频考点+重难点讲练与测试(苏科版)
9 . 如图,把
的一角折叠,若
,则
的度数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/6/d68320f7-8338-40d9-89c2-ef3263a6c8c2.png?resizew=164)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d57d36b474e1a24c90489254d5516f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4678ff1b3ea3bd09ed3494a0efe31c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/6/d68320f7-8338-40d9-89c2-ef3263a6c8c2.png?resizew=164)
A.![]() | B.![]() | C.![]() | D.![]() |
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23-24七年级下·全国·假期作业
10 . 如图,在长方形
中,点E,F分别在
边上,沿直线
折叠后,C,D两点分别落在平面内的点
处.若
,则
的度数为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c46c696ff5f123a482bae81cf9a1b570.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c37547156910f5307b8a0c496909f92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a166225f9ada66c353e21ee2262d42c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d57899ad4774aed9ccc7bd23db72153.png)
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