1 . 如图,在
中,
,点D、E、F分别在AB、BC、AC边上,且
,
.
是等腰三角形;
(2)当
时,求
的度数.
![](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/0e53497af8899cb299d762f1a4f46a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f805768a5ffaf8bdfa4bc3b680aafdc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee54b9b398ce80cd054b56173fe810f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b3b0b11a80e8b107e55534d7fda9f2b.png)
您最近一年使用:0次
2024-02-28更新
|
148次组卷
|
4卷引用:四川省乐山市市中区2023-2024学年八年级上学期期末数学试题
四川省乐山市市中区2023-2024学年八年级上学期期末数学试题广东省茂名市高州市高州市第一中学附属实验中学2023-2024学年八年级下学期月考数学试题2024年湖南省初中学业水平考试数学模拟试卷(已下线)专题01+等腰三角形与直角三角形01(9大题型+优选提升题)-备战2023-2024学年八年级数学下学期期末真题分类汇编(北师大版)
2 . 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)
您最近一年使用:0次
3 . 如图1,已知
,点D在BC上,且
,
,AC与DE相交于点F,连接CE.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/6e5292b3-25dc-4d3d-8db3-9847ccd3a64f.png?resizew=295)
(1)求∠DCE的度数(用含
的代数式表示);
(2)求证:
;
(3)如图2,若
,判断△ADF的形状,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28b2c767972aa7c8ca26d50d33bc001b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d212c1709b8e72a055cf1b5381ef64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/6e5292b3-25dc-4d3d-8db3-9847ccd3a64f.png?resizew=295)
(1)求∠DCE的度数(用含
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce303692c996c0cdb9baaab9fb7bd84c.png)
(3)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edffb236f765898461297ad7b854bd69.png)
您最近一年使用:0次
4 . 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
5 . 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)
您最近一年使用:0次
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
6 . 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)
您最近一年使用:0次
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
名校
7 . 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)
您最近一年使用:0次
2024-02-15更新
|
53次组卷
|
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
8 . 如图,
,
,
,
.
与
的位置关系,并说明理由;
(2)若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fbbd17c89f03dbb61cd6ffdb9a0344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb570ae4f92277a0ece9a4b449bd4f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4842e4ae00f68ae6f2907b33dff9d227.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/148ee5370666a5e628b4f03144dac9b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b4596553ebbb9344c285a4de9a8f7b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
您最近一年使用:0次
2024-02-05更新
|
95次组卷
|
3卷引用:四川省成都市2023-2024学年八年级上学期期末数学试题
9 . 如图,
中,
,作
,
,
,
.
;
(2)求
的长.
![](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/70734a8e672376bb0bd1522e229f86a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76b4945ea1c831243bd1b3c6eefe7409.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f01c4faacedfe56f5127d6c0cc63cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037b342a682cbd4241855a243da3c016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf96bd081660f8715e38ee739000a331.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2024-02-05更新
|
72次组卷
|
3卷引用:四川省成都市经开区2023-2024学年九年级上学期期末数学试题
名校
10 . 已知,在
中,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/7/ad4d87e9-087f-4839-9c8d-df7645792dd5.png?resizew=426)
(1)如图1,点D、点E分别是线段
上两点,连接
、
,若
,且
,求
的度数;
(2)如图2,点D、点E分别是线段
上两点,连接
、
,过点B作
交
延长线于F,连接
,若
,求证:
;
(3)如图3,M为射线
上一点,N为射线
上一点,且始终满足
,过点C作
的垂线交
的延长线于点P,连接
,猜想:
之间的数量关系并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/7/ad4d87e9-087f-4839-9c8d-df7645792dd5.png?resizew=426)
(1)如图1,点D、点E分别是线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c503e29373e8d87134bdb46bd3912910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/506d14a98bc588e91569630729ec7256.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b55b502f406c3525ce81b60bdfdc11e.png)
(2)如图2,点D、点E分别是线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f60db833d4ff6b92c78029e8264ca1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/506d14a98bc588e91569630729ec7256.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92b78dd4364686dbc5dfd313814d2ac1.png)
(3)如图3,M为射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa3f18879c8856a1446eee421ed56ced.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ffc7d1af9053b027cf9e726f5367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e406b8fdd4d66505715fbcd20d872d60.png)
您最近一年使用:0次
2024-01-26更新
|
226次组卷
|
3卷引用:四川省宜宾市第二中学校2023-2024学年八年级上学期第二次月考数学试题