1 . 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)
您最近一年使用:0次
2 . 如图,点D是
边BC上一点,若
,
,
,则
的度数为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aa068df650aeef98d6335453d00632a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffc25223f469eefd32df10559212f0a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8a896e05730e8dd3bee64a4911c33dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/25/070dd1ef-9615-4a27-bdb5-6798372d51db.png?resizew=160)
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3 . 在
中,
、
为锐角,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/459459559720ab5e154a80723c47cc30.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/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8080e73821f7b53aeb545045960e95a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/459459559720ab5e154a80723c47cc30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
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4 . 根据下列条件不能判定三角形是直角三角形的是( )
A.![]() | B. ![]() |
C.![]() ![]() ![]() | D.![]() |
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5 . 如图1,在
中,
,
,点
为
内部一点,
,连接
,将
绕点
逆时针旋转
得到
,连接
交
于点
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/ccbc4ea0-1773-4e17-9f6b-608d02cee8f8.png?resizew=415)
(1)求证:
;
(2)如图2,当点
落在
上时,求
的度数;
(3)如图3,若
为
的中点,
,求
的长.
![](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/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc13fe21e64d9b45614ed43be847904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d7080f104e9e5d23a2858c605cdb6dc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/ccbc4ea0-1773-4e17-9f6b-608d02cee8f8.png?resizew=415)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e9be98db08d441da6bf0e061f7c9c5.png)
(2)如图2,当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/685516a27697104e83b311d76efa17aa.png)
(3)如图3,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714cc3707bba3bfdb56e251999be8592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
您最近一年使用:0次
名校
6 . 如图所示,已知直线
,则
的度数为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb2dc3c181594a1978cdd683c5006512.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/605f2976297a0deaa1602ef09d6a5afa.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-02-19更新
|
114次组卷
|
5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 . 如图,
中,
,
,
,
逆时针旋转一定角度后与
重合,且点
恰好成为
的中点.
(2)求
的度数和
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54486ba185c2598d90d996821c7e8159.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fbc97ba3138ddbc9e76724cac9cd63d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df3b2901ad26337818f75e81448ebb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060705794ef87cc71dac40c57f27b1d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
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2024-02-18更新
|
40次组卷
|
2卷引用:四川省达州市渠县东安雄才学校2023-2024学年下学期八年级数学期中复习题
8 . 如图,在
中,
,
,将
绕点
逆时针旋转得到
,若点
恰好落在线段
上,
、
交于点
,则
的度数是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86cc0b6f5748fb58042339b4b563bc07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cf39c4552ecb2b659f052dc5c0f5eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24cfad1ba71a78d8f415335cde2f8c52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/975e53b518e716ff49ce1ddac636dc1f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/4a02cc26-b4f1-46af-834c-265f23890ea4.png?resizew=144)
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名校
9 . 如图,直线
,
,
,则
的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d3783ed9a7d67f4a30bd76d369555d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0e8f35e8fff37c26b396c5a3dfdea4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c543c3ddc3723fde6bbfca3ea3b921b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-02-18更新
|
374次组卷
|
7卷引用:四川省成都市成华区2023-2024学年八年级上学期期末数学试题
四川省成都市成华区2023-2024学年八年级上学期期末数学试题四川省成都市成华区2023-2024学年八年级上学期期末考试数学试题陕西省西安市长安区航天城第二中学2023-2024学年九年级下学期月考数学试题2024年重庆市中考备考模拟数学模拟试题(一)重庆市北碚区西南大学附属中学校2023-2024学年九年级下学期3月月考数学试题重庆市长寿区长寿川维中学校2023-2024学年九年级下学期期中数学试题(已下线)专题01 平行线相关问题专练(7题型)【好题汇编】-备战2023-2024学年七年级数学下学期期末真题分类汇编(浙江专用)
10 . 如图,在
中,D为
上一点,
为
的高,
为
的角平分线.若
,
,求
的度数.
![](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/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99e01df226004badd290b3ad24aab381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f3de51689bb8ace178d3c120ce99dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac37366d2b54dc7d9a95ac6ddda5f3a8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/17/9eca5d8b-f948-49f1-90d1-faa2c3cd0741.png?resizew=168)
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2024-02-17更新
|
59次组卷
|
2卷引用:四川省广安市邻水县2023-2024学年八年级上学期期末数学试题