1 . 夹文件的一种燕尾夹如图1所示,图2是在闭合状态下的示意图,经测量知
,
,
,则在闭合状态下,点B,D之间的距离是______
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/24/b36e2494-243a-4396-9b24-f515479b43ac.png?resizew=122)
图1 图2
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bdcb67e1197dee6b6f0c43f4c7c1a8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c881dc39074c05a91506ad375bb8d62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d04fad8b8022244c84303235cb7d08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f3bf70722b22983c120d008d097602.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/24/0435fb00-2e4b-437a-b52b-0f8c9d6dc445.png?resizew=102)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/24/b36e2494-243a-4396-9b24-f515479b43ac.png?resizew=122)
图1 图2
您最近一年使用:0次
2024-01-23更新
|
109次组卷
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3卷引用:福建省泉州市2023-2024学年九年级上学期期末数学试题
2 . 如图,若线段
为
的中位线,则
的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/8/5eadc758-80ee-488f-af00-d3276bfc7944.png?resizew=160)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a26f119f277ba1c015f6401045854c6a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/8/5eadc758-80ee-488f-af00-d3276bfc7944.png?resizew=160)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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2卷引用:福建省泉州市2023-2024学年九年级上学期期末数学试题
3 . 如图,在
中,以
为直径的
与
相切于点
,与
相交于点
,
是
上一点,且
,连接
,若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/5c1cba730226f8996e86127ff643ce63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4494a85de0be0b97a69348115aef8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60572975f9ac06ffc8d98ef94de49eb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
您最近一年使用:0次
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|
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4卷引用:福建省福州市2023-2024学年九年级上学期期末数学试题(一模)
福建省福州市2023-2024学年九年级上学期期末数学试题(一模)山西省运城市临猗县多校2023-2024学年九年级上学期期末数学试题(已下线)2024年四川省泸州市中考数学真题变式题22-25题(已下线)2024年江苏省盐城市中考数学真题变式题22-27题
4 . 在平面直角坐标系中,
为坐标原点,抛物线
与
轴交于
两点(点
在点
的左侧),与
轴交于点
,且
.
(1)求抛物线的函数表达式;
(2)点
为线段
上的动点,过点
作
的平行线交
于点
,求
面积的最大值;
(3)点
是该抛物线上不同于
的一个动点,连接
,过点
作
的平行线
,过点
作
轴的平行线
,交
于点
,判断直线
是否恒过一定点,如果过定点,求出定点坐标;如果不过定点,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e2d3d0cd37bb8b297447e92bb8f0d03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae6f48b9a53c0155a692509cf31f7e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa234b567f1d5398abe5c7c26cdc1c6e.png)
(1)求抛物线的函数表达式;
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae6f48b9a53c0155a692509cf31f7e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
您最近一年使用:0次
5 . 如图,正方形
的边长为4,点
为
的中点,连接
,点
分别在
上,且
,则
的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/21/ebf204f3-0bb8-466f-b641-16bc045eff70.png?resizew=110)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/726d5d2b7289b629fd5a4fd1dcab24f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a78d32051d47e2cfce80f0d03987778a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa37c517268730a6a9834600bfef01a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/21/ebf204f3-0bb8-466f-b641-16bc045eff70.png?resizew=110)
A.![]() | B.![]() | C.![]() | D.3 |
您最近一年使用:0次
2024-01-21更新
|
340次组卷
|
2卷引用:福建省三明市2023-2024学年九年级上学期期末数学试题
6 . 某校数学兴趣小组模仿七巧板制作了一副如图所示的五巧板,①和②分别是等腰
和等腰
,③和④分别是
和
,⑤是正方形
.这副五巧板恰好拼成互不重叠也无缝隙且对角互补的四边形
,直角顶点
分别在边
上.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/21/e052ef39-8c1c-4c55-93fd-252f881fd06b.png?resizew=166)
(1)求证:
;
(2)若
,求
的长;
(3)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceea0d67a2e0222e69e7a9ece2a77b26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b01a4595df2d52125c8d8d02d866c6ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827d6c5b814e0a51d524106916f345b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe74203156a63d311ba0de7587b831a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c89029e1d782dbf6a0bda8605a7c5ad4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68f2c6d854d7ca94f77c0c9ba969dd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fd61633f75489f785954fc7c196bb00.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/21/e052ef39-8c1c-4c55-93fd-252f881fd06b.png?resizew=166)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa8febd358418ad90a753833fbc79d67.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/982dcc9d70e05900e69ab1f6e84b249d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4993549e48437b305375feb2ad2251d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffff33a62bc63108a1cdd0d8ea671a52.png)
您最近一年使用:0次
2024-01-21更新
|
363次组卷
|
2卷引用:福建省三明市2023-2024学年九年级上学期期末数学试题
7 . 如图,已知
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b763ff9b9d3b594e946a5366ebae9b6b.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c436f108fd4921dae15ecff19270237e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db87bf38e1a0ed008a34f6e3c3f23470.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b763ff9b9d3b594e946a5366ebae9b6b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/21/63245bd6-2487-4e4b-b018-4ae78b5fba31.png?resizew=178)
您最近一年使用:0次
2024-01-21更新
|
304次组卷
|
2卷引用:福建省三明市2023-2024学年九年级上学期期末数学试题
8 . 如图,四边形
和四边形
都是正方形,点
在射线
上,
交
于点
交
延长线于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/21/45282058-887e-44b5-a1e1-04f0bb44ee59.png?resizew=113)
(1)若
为
的中点,求证:
;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc7ee0ef8945ba1b90e59aed7cab889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b56df55a6e959b9a103cfddc9a513d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/21/45282058-887e-44b5-a1e1-04f0bb44ee59.png?resizew=113)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb78fdee7e60133b777938186c29b3ee.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd6b45287ecf94566b572cff015d4aba.png)
您最近一年使用:0次
名校
9 . 如图,已知矩形,
,
,点N是边
上一点,且
,将矩形
绕A顺时针旋转
(
),得到矩形
,点B的对应点是点E,点C的对应点是点F,点D的对应点是点G,连接
.点M是
的中点,连接
,在旋转过程中,线段
的最大值为
您最近一年使用:0次
2024-01-19更新
|
330次组卷
|
3卷引用:福建省厦门市思明区厦门外国语学校2023-2024学年九年级上学期期末数学试题
福建省厦门市思明区厦门外国语学校2023-2024学年九年级上学期期末数学试题(已下线)数学(泰州卷)-学易金卷:2024年中考第一次模拟考试四川省成都市金牛区成都外国语学校2023-2024学年九年级下学期数学3月月考试题
名校
10 . 已知
中,
,
平分
,
,
,点
,
分别是边
,
上的点(点
不与点
,
重合),且
,
,
相交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/0c98af5e-9115-42b7-9982-17b8f881b8d2.png?resizew=456)
(1)求
的长;
(2)如图1,如果
,求
的值;
(3)如果
是以
为腰的等腰三角形,求
长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d00f4651b343dd8f9060c6460f0c955.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ae33de8da1753251848ecbc01b50af.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/585f34b8f80462845450a25f91a285d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/0c98af5e-9115-42b7-9982-17b8f881b8d2.png?resizew=456)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)如图1,如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd86d7561bafcbc8ae785e995ca5ec96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e04c0b8fd7ec4c3dd37a9e954e229a9f.png)
(3)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
您最近一年使用:0次
2024-01-12更新
|
206次组卷
|
3卷引用:福建省泉州市鲤城区福建泉州外国语学校2023-2024学年九年级数学上学期期末数学试题