20-21八年级下·全国·课后作业
1 . 已知:如图,在
和
中,
,
,
.求证:
.(验证HL)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7182761948491380a34a4e1994114dc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc5d46fff0ce63ed71465b3e9efca8d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e117b368e8495c7835e3878233068fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fef73d6628c3248ae8cbef464050ed2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db2f85c538f4c974a35d259a1f766dd6.png)
![](https://img.xkw.com/dksih/QBM/2021/10/12/2827617506803712/2828322666119168/STEM/26172d9a-92dc-40c5-8024-ece099b1df04.png)
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2 . 如图,已知
,
,
,则全等三角形共有_________ 对.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56ee81929c987732fcb379802eeef7a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feb67f27bcda7681b19239a199b4c4d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686171942bd7698035016c732db43b63.png)
![](https://img.xkw.com/dksih/QBM/2021/10/3/2821500604129280/2822108517990400/STEM/a280dc94-1715-4ee4-ac51-7dad84fd853a.png)
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2021-10-07更新
|
725次组卷
|
2卷引用:人教版七年级下 第十二章 全等三角形 12.2 三角形全等的判定(1)
3 . 三角形全等的判定方法——“边边边”(即SSS)指的是____________ .
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4 . 画一画,想一想:
利用圆规和直尺作一个角
等于已知角
,你能说明作法的理论依据吗?
利用圆规和直尺作一个角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15417741fba20d681ab4414b07339099.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780d8fd6c6c1deeeb45e15f639719e02.png)
![](https://img.xkw.com/dksih/QBM/2021/10/3/2821500604129280/2822108518039552/STEM/44ec24e5-3972-431a-a9e9-a69a307ece64.png)
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5 . 已知:三角形
中,
,证明:
.(取边BC中点D,连接AD)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4354365ca0929f8a606ed0bf341e4ca.png)
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6 . 如图,在
中,
,中线
和
相交于点F,
,则图中可用
证出的全等三角形共有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/21/a81d9ac9-651f-4351-9686-efab42e6aa5f.png?resizew=131)
![](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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421291381be28da4bd16560fd383b4a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cbfd199e0ba3e1ec7016a44454e7a3c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/21/a81d9ac9-651f-4351-9686-efab42e6aa5f.png?resizew=131)
A.1对 | B.2对 | C.3对 | D.4对 |
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7 . 如图,
交
于点O,则下列结论不正确的是( )
![](https://img.xkw.com/dksih/QBM/2021/9/14/2808050965823488/2808492156157952/STEM/43ad16a6-8d3f-4e0f-b7a5-714deefd120a.png?resizew=160)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfb1b06c9e774630829cddbbb5fd309a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://img.xkw.com/dksih/QBM/2021/9/14/2808050965823488/2808492156157952/STEM/43ad16a6-8d3f-4e0f-b7a5-714deefd120a.png?resizew=160)
A.![]() | B.![]() | C.![]() | D.![]() |
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2021-09-15更新
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386次组卷
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2卷引用:【冀教版】八年级上册第十三章 全等三角形 13.3 全等三角形的判定 第一课时 全等三角形的判定(一)(SSS)
8 . 如图,已知
垂直平分
,则图中全等的三角形有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/7cd1e9d8-12f8-4374-870d-cf8216c8301e.png?resizew=170)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/7cd1e9d8-12f8-4374-870d-cf8216c8301e.png?resizew=170)
A.1对 | B.2对 | C.3对 | D.4对 |
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21-22九年级上·全国·课后作业
9 . 如图,点
,
,
,
,
,
分别在
上,
,
,连接
,
.
与
全等吗?为什么?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/8455657dde27aabe6adb7b188e031c11.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/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de966c316db1013defc56372fcf814e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf857e03d4320c999d328fd657c2d412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb49df05f2e31d005735c3f14a21d30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7e64c953aaf341e772a5fe776fbc78a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/23/12aecc3b-6570-4755-ac28-b8132815403f.png?resizew=147)
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名校
10 . 如图,已知AB=CD,AD=CB,求证:∆ABD≌∆CDB.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/7/34d60086-fb92-43c8-ab54-c389ea788bd0.png?resizew=114)
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2022-09-23更新
|
575次组卷
|
8卷引用:北师大版七年级数学下册习题:4.3《探索三角形全等的条件》
北师大版七年级数学下册习题:4.3《探索三角形全等的条件》云南省个旧市第二中学2020-2021学年八年级上学期期中数学试题北京市朝阳区日坛中学2021-2022学年八年级上学期期中数学试题广东省梅州市梅江区学艺中学2021-2022学年七年级下学期5月月考数学试题江西省抚州市临川第一中学2022-2023学年八年级上学期期末数学试卷(已下线)专题4.4 全等三角形的判定与性质(知识解读)-2022-2023学年七年级数学下册《同步考点解读·专题训练》(北师大版)(已下线)专题02 探索三角形全等的条件(六大类型)(题型专练)-2023-2024学年八年级数学上册《知识解读·题型专练》(人教版)新疆维吾尔自治区阿克苏地区新和县第一中学2023-2024学年八年级上学期9月月考数学试题