1 . 两个大小不同的等腰直角三角形
如图所示摆放,点
在同一直线上,连接
.
(1)求证:
.
(2)求证:
.
(3)若
,则
______(直接写出答案).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/181cc1d6c57ff0e8f14b6e6a9ebe65d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2e8754585a460b01bb92af46cd15b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f243f0482018571a3fcdee60c99b881.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/66b2a76c-6f87-460a-947d-6b2e3bd6d86c.png?resizew=150)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/960d61e0d9a749cba705359a15e683d2.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b59bfa454f1729db06a42362086230f.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5336ad76763e018ceaec8015b2ca27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32ba21720fda641264518b638787454e.png)
您最近一年使用:0次
2 . 图①、图②均是4×4的正方形网格,每个小正方形顶点为格点,每个小正方形的边长均为1,点A、B、C均在格点上,按下列要求画图.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/3/86d792aa-d458-4e34-a080-17785943a175.png?resizew=220)
(1)在图①中,以格点为顶点,
为腰,画一个三边长都是无理数的等腰三角形;
(2)在图②中,找到一个格点D,连接
、
、
,使
与
全等.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/3/86d792aa-d458-4e34-a080-17785943a175.png?resizew=220)
(1)在图①中,以格点为顶点,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)在图②中,找到一个格点D,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2036191be2322003aaee6bb411868327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
您最近一年使用:0次
3 . 如图,
是等边三角形,点D在
上,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/23/606049cf-11a2-4794-87f3-21ee14118517.png?resizew=129)
(1)求证:
;
(2)判断
的形状,并说明理由.
![](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/0e53497af8899cb299d762f1a4f46a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d42218a68301d770accaaefb96b19f8a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/23/606049cf-11a2-4794-87f3-21ee14118517.png?resizew=129)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f38d226f49fd2a69fe7e2fda40c182e.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15514bc735fe4b744672edefe00009c.png)
您最近一年使用:0次
2023-12-23更新
|
63次组卷
|
3卷引用:河北省廊坊市永清县第五中学2023-2024学年八年级上学期月考数学试题
4 . 如图,
,
于点D,
,
平分
交
于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/20/822de9c8-6fbc-4046-90a9-154003792dac.png?resizew=195)
(1)求证:
(2)直接写出图中所有全等三角形(
除外).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d212c1709b8e72a055cf1b5381ef64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57e7106619c08f2bcc1d21f846e8a0de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/20/822de9c8-6fbc-4046-90a9-154003792dac.png?resizew=195)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab083b4fd82749bcf218be6131baac63.png)
(2)直接写出图中所有全等三角形(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab083b4fd82749bcf218be6131baac63.png)
您最近一年使用:0次
5 . 如图,在等边三角形
中,点
,
分别是边
,
上的点,且
,连接
,
交于点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/29/b3cfe005-6ae3-4484-9fa7-2ab5ddece692.png?resizew=145)
(1)求证:
;
(2)若
,求
的值;
(3)若点P恰好落在以
为直径的圆上,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421291381be28da4bd16560fd383b4a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/29/b3cfe005-6ae3-4484-9fa7-2ab5ddece692.png?resizew=145)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e238f17e8e5277a4194d78d33af1f0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d511b45c0c8b8544255dbf78bb716c61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17447cf765487d7712544bc0072f8fd2.png)
(3)若点P恰好落在以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee940049ce6026ed32c01a8d0b29905.png)
您最近一年使用:0次
2023-12-20更新
|
254次组卷
|
7卷引用:2022年浙江省杭州市滨江区一模数学试题
2022年浙江省杭州市滨江区一模数学试题2022年浙江省杭州市初中毕业升学模拟检测(一)数学试卷(已下线)专题4.10 平行线分线段成比例(培优篇)(专项练习)-2022-2023学年九年级数学上册基础知识专项讲练(北师大版)(已下线)专题27.11 由平行线截得的比例线段(培优篇)(专项练习)-2022-2023学年九年级数学下册基础知识专项讲练(人教版)(已下线)专题6.10 由平行判断成比例的线段(培优篇)(专项练习)-2022-2023学年九年级数学下册基础知识专项讲练(苏科版)浙江省金华市五中等三校联盟2023-2024学年九年级上学期期中数学试题(已下线)清单14 相似图形基础(3个考点梳理+14种题型解读+提升训练)-2023-2024学年九年级数学上学期期末考点大串讲(苏科版)
6 . 如图,在长方形
中,
,点
在边
上,且
.动点
在边
上,从点
出发以
的速度向点
运动,同时,点
在边
上,以
的速度由点
向点
运动,若在运动过程中存在
与
全等的时刻,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9040c9795e7132ebf65ede1f98c4d72b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e12af26022e6eee7259c9f5b9d4a1767.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f09251dec02dc2419a5389cca8f136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7961242231c1ac76fcb22cbe2751956c.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/ab3f10d25920f9d3077d8e3e5e006c15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c495b8fd7f7bb21c177c9d50fbf6919.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc13a607ac0c7f76d252d7cb1bb040fd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/18/3b15efd9-326c-4f35-98be-d15061946719.png?resizew=122)
您最近一年使用:0次
名校
7 . 如图,
是等边三角形
内一点,将线段
绕点
顺时针旋转
得到线段
,连接
.若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70e9ad6d50f5a45dbd9f70b2a0fbdeef.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/18/791f4df9-1b41-490a-a31d-67de8ba7c853.png?resizew=161)
(1)证明![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f17062bfdc915eeceba02675ad0a6207.png)
(2)求三角形
的面积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70e9ad6d50f5a45dbd9f70b2a0fbdeef.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/18/791f4df9-1b41-490a-a31d-67de8ba7c853.png?resizew=161)
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f17062bfdc915eeceba02675ad0a6207.png)
(2)求三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1956db288a5a3b8c97d2539e9e5e4f85.png)
您最近一年使用:0次
8 . 如图,
,
,则直接证明
的方法( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/18/820a2bf5-4137-4dc1-81a9-2c60fb03e435.png?resizew=135)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4009aa13093cc3865dcd51b371892160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b84c9371e4a03c80783e0ec52f60530.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/18/820a2bf5-4137-4dc1-81a9-2c60fb03e435.png?resizew=135)
A.有1种 | B.有2种 | C.有3种 | D.有4种 |
您最近一年使用:0次
名校
9 . 如图,点
,
在线段
上,
,
,
.
求证:
.
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c220eadc312101e2fb89dfe920f7b30d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f805768a5ffaf8bdfa4bc3b680aafdc9.png)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57cfa2fe76009b2ea36df44b1f8bb4d9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/4/3447a508-7299-4d13-ba9b-b044e08b7cfd.jpg?resizew=141)
您最近一年使用:0次
2023-12-17更新
|
123次组卷
|
2卷引用:福建省泉州市晋江市安海片区2023-2024学年八年级上学期期中数学试题
名校
10 . 如图,点
是四边形
内一点,且满足
,
,
,
,
,
,
分别为边
,
,
,
的中点,则四边形
的形状为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/17/263748f7-24d4-4bdd-a22c-8510698a23d0.jpg?resizew=162)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e4d19bf237a6fca67e0d01a9ddb726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed66431681da1db8f7cb0f40cd19201.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2864b1cab89e9a767e3a0fc0a8c3561c.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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/17/263748f7-24d4-4bdd-a22c-8510698a23d0.jpg?resizew=162)
A.平行四边形 | B.菱形 | C.矩形 | D.正方形 |
您最近一年使用:0次