名校
1 . 如图,在
中,
,
的垂直平分线交
,
于点D,E,连接
,则下列结论错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4354365ca0929f8a606ed0bf341e4ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2024-02-26更新
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2卷引用:四川省成都市武侯区成都市玉林中学2023-2024学年八年级下学期期中数学试题
2 . 若
的三边长分别是a,b,c,则下列条件:①
;②
;③
;④
中不能判定
是直角三角形的个数有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1ac3781e2ca56262e180134d9200bed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebcf6cb47d2204c18cdff0c08a3ee7ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e597138bc1ed3f80e3d4c5cc736584b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/792fd4da4647ffd1ba0549012c5a2cd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.1个 | B.2个 | C.3个 | D.4个 |
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2024-02-26更新
|
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4卷引用: 四川省巴中市2023-2024学年八年级上学期期末考试数学试题(华师大版)
3 . 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.![]() |
您最近一年使用:0次
4 . 如图,在四边形
中,
,
,
,
.
;
(2)若
,
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e53497af8899cb299d762f1a4f46a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9953b7b5c647641edbec4c2ab90a65f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f6f820ef108b2d7e98cf4b9c2e276a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0335a0ec4699c35b382c0b3fcf7eea32.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab4f318fd596282e1d965ab29bbf362f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc849980579cd8b0560d76ba78331ffa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db866ecc0c098bfc32ec8a43b65bdd58.png)
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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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|
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|
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
名校
8 . 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.![]() |
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|
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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)
9 . 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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|
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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
名校
10 . 如图1,已知等边三角形
的边长为
,点P,Q分别从点A,B同时出发,沿边
向点B和点C运动,且它们的运动速度都是
/秒.直线
交于点M.
,当点P,Q运动______秒时,
是直角三角形;
(2)求证:
;
(3)在点P,Q分别在边
上运动的过程中,求当运动时间为多少秒时,
是等腰三角形?
(4)如图2,若点P,Q在运动到点B,C后继续在射线
上运动,直线
交于点M,当
是直角三角形时,求点P的运动时间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93841fd3094aa28dd80ca164fce22ff2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4515e1dff9a852b3294dc1d6488a5748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fbbd11ff5f019de35a4f836a547c3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/519ec0a02fd27e51789c002d453616f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c495b8fd7f7bb21c177c9d50fbf6919.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cb0c2abf06e3614f9ba60ae151ad042.png)
(3)在点P,Q分别在边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4515e1dff9a852b3294dc1d6488a5748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dddb32a7a5c157fdf8aa049b2d665b4c.png)
(4)如图2,若点P,Q在运动到点B,C后继续在射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4515e1dff9a852b3294dc1d6488a5748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/519ec0a02fd27e51789c002d453616f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dddb32a7a5c157fdf8aa049b2d665b4c.png)
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|
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2卷引用:四川省德阳市旌阳区2023-2024学年八年级上学期期末考试数学试题