1 . 若三角形一个内角度数为α,另外两个内角的度数比为
,则称此三角形为
型三角形.若一个三角形为
型三角形,则该三角形中最大内角的度数为_________ ;若一个三角形既是
型三角形,又为
型三角形,则n的最大值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e76eac424c35e034897a354396f9e4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaa9a2d8dbec6f43e7897cf4ca875575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/183ce88d02e31c57719d9cf00507fdf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b37e496951b0ae2abca9fc8b7d47ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a54da96c08390a845f1c4e84d17d40.png)
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名校
2 . 如图,将
沿BC翻折,使点
落在点
处,过点
作
交
于点
,若
,
,则
的度数为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c631670e02d2a38e9c78708a3916140.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eb97aff0960e2640314888a38e7169c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d230127a74c178dd87e9968178aee42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a99bb5ad8cf2abdde96624509bc7bfde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
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2024-03-11更新
|
290次组卷
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15卷引用:四川省成都市天府第七中学2022-2023学年七年级下学期期中数学试题
四川省成都市天府第七中学2022-2023学年七年级下学期期中数学试题山东省青岛市实验初中、三十七中、三十九中2022年七年级下学期期末数学试题山东省青岛市2021-2022学年七年级下学期期末数学试题(已下线)专题13.21 轴对称与折叠问题(基础篇)(专项练习)-2022-2023学年八年级数学上册基础知识专项讲练(人教版)(已下线)考点一 轴对称山东省青岛市黄岛区育才初级中学2021-2022学年七年级下学期期末数学试题山东省菏泽市鄄城县2022-2023学年七年级下学期期末数学试题(已下线)第13章 轴对称(单元测试·培优卷)-2023-2024学年八年级数学上册基础知识专项突破讲与练(人教版)(已下线)第2章 轴对称图形(单元测试·培优卷)-2023-2024学年八年级数学上册基础知识专项突破讲与练(苏科版)黑龙江省齐齐哈尔市拜泉县第三中学2022-2023学年八年级上学期期中数学试题(已下线)专题7.8 平行线中的折叠问题的四大题型-2023-2024学年八年级数学上册举一反三系列(北师大版)(已下线)专题5.5 平行线中的折叠问题的四大题型-2023-2024学年七年级数学上册举一反三系列(华东师大版)黑龙江省哈尔滨市工大附中2023-2024学年八年级上学期期中数学试题陕西师范大学附属中学2023-2024学年七年级下学期期中数学试题陕西省西安市陕西师范大学附属中学渭北中学2023-2024学年七年级下学期期中数学试题
2024八年级下·全国·专题练习
3 . 如图,在
中,
,点D,E分别在边
上,若
,
,则
的度数为 ___________ .
![](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/5345f892125374809bcaaab5da8d3f5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d212c1709b8e72a055cf1b5381ef64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e3889e68e94b8375b6078518e185049.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060705794ef87cc71dac40c57f27b1d2.png)
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4 . 如图,
,
、
、
分别平分
、
、
,有下列结论:①
;②
;③
;④
与
互余.其中,结论正确的是______ .(只填序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b46c607b3deac746c0ef3389ad8f65c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2273ae1ee99cec9c1304323bc9ebf75f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b6a23d521606a35298bbf147f7f830c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2ee75a234ac05a3225e49ddd8c5065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73f68e4414c9ab464bf433385c03705f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/982f824aa56c399260dcf6e83d169344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1151bc2391d36421aff249891c1600c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f7fb34f352e877cac3ba6c4c668c22c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7d6902c8862bd2616be038549f77aff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b6e4330927acd53f2006bb60b6a1be8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/87ae7c1b-c970-4574-b582-29221107e1ab.png?resizew=171)
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5 .
,若
,
,则
等于_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ca10806fc8c3c3efd6859f526b76900.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b36903e8133c2d4f8cb237f89ca00e6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad03755999be24fa7b6fcc2b0245e71f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
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6 . 如图,
中,
,
,
,则
等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3393b3590c1b09bca24ee67cfb592315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d8d9a8fc8cc7852df70b3f1a7c80138.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/105068b25f5a63af32f4082cfe08691e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3e081637bcea5368cc72370bae283b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/1/0e7eb762-d591-4b84-869f-198585f6b792.png?resizew=156)
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2024-03-02更新
|
55次组卷
|
2卷引用:四川省成都市金牛区2023-2024学年八年级上学期期末数学试题
7 . 等腰三角形的一个角为
,则它的顶角为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d36581140ebac5d28438ea63b1b23b65.png)
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2024-02-29更新
|
66次组卷
|
3卷引用:四川省凉山彝族自治州2023-2024学年八年级上学期期末数学试题
四川省凉山彝族自治州2023-2024学年八年级上学期期末数学试题江苏省南京市浦口区南京明道学校 2023-2024学年八年级上学期10月月考数学试题(已下线)北师大版七年级期末真题必刷常考60题(60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(北师大版)
8 . 一副三角板按如图所示的位置放置,过点A 作直线
,
平分
,
、
交于点F.已知
,
,
,
.下列结论正确的是_______ .
①
;②
平分
;③
;④
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/701bb29066082e9ac114377cb1a4678e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/781026dac62b5373596f56360bf573a6.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/2d4d00b86b2f067b902baf6e52f0faab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/931b1589d78dd81a3ecac7b9664b3307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f81e24376a13d648c2ed0dc73bc710e.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70ab6b4866ff2e3fcde1ab6a59b8ea7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fbd1aaae1a60dad163311e2393c2637.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e134c7ceaf45ae447b018f75a6220cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/105fe3c615101eb3be6903fdcf4401e9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/28/24baa80d-0cb0-441a-9176-a1c98f51c53c.png?resizew=188)
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9 . 如图,在
中,
,
,D为
上一点,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/802a939a9ab14a1a762a4275c9ec6899.png)
_____ .
![](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/2677ee9264fd2b6338e4ed853c91e320.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f5fc4ad65b723b6a8da4c8dac154e6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/802a939a9ab14a1a762a4275c9ec6899.png)
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10 . 如图,在
中,
为
边上一点,
,则
的度数为________ .
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba0cddb1d417cdc5375a3d9f432f8b5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/721c75fcd58d3d54260aad0f82e09e37.png)
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