名校
1 . 如图,在平面直角坐标系中,已知抛物线
与
轴交于
两点,与
轴交于
点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/28/9daecf1a-00b4-4f3d-94f3-ce877cac593f.jpg?resizew=315)
(1)求抛物线的解析式;
(2)在抛物线上是否存在点
,使
,如果存在,求
点的坐标,如果不存在,说明理由;
(3)若
是抛物线第二象限上一动点,过点
作
轴于点
,过点
、
、
的圆与
交于
点,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c468dc5cc34c14a188493a21019e8f83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac215b8f28066a14322eca5a3628484.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/e43a0013492c1fc023885fb9a5b68a27.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/28/9daecf1a-00b4-4f3d-94f3-ce877cac593f.jpg?resizew=315)
(1)求抛物线的解析式;
(2)在抛物线上是否存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e88951efaced9c569dc55936f5844c0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/010989c488d7f0551c9f2aa8bba6bf1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
您最近一年使用:0次
2 . 如图,在平行四边形
中,E为
上一点,且
,
与
相交于点F,
,则
.( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/26/66b1882b-5a36-458b-9626-b7b193bc0d64.png?resizew=177)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c32ffe9f4c7aab691c39afda34ea234.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/95a1bfe3e5d0af3f03065fdca5145794.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d6df573d437cd000e1effe49d1871f5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/26/66b1882b-5a36-458b-9626-b7b193bc0d64.png?resizew=177)
A.4 | B.8 | C.12 | D.18 |
您最近一年使用:0次
3 . 如图,矩形
中,P为
上一点,
交
的延长线于点E.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/26/a3a2d57f-9f30-4ee9-8c47-9a1d04434294.png?resizew=174)
(1)求证:
;
(2)若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09492d7bc43e03973f86d4a472f1110a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/26/a3a2d57f-9f30-4ee9-8c47-9a1d04434294.png?resizew=174)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8c511294fe303bdd8f1425719769289.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b3bb54efc503537bff9f6eba09ac01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
您最近一年使用:0次
4 . 如图1,在正方形
中,
为边
上的动点(与点
不重合),点
在
的外接圆上,且在正方形
内部,
是
的中点,圆的半径为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/26/80ce020f-8921-4b20-98e9-e22fd9e1387d.png?resizew=417)
(1)证明
为等腰直角三角形
(2)如图2,连接
过点
作
于
,求
的长
(3)如图3,若
为
的一个四等分点,点
在
的外接圆上,
,求
的长
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da6b93dbe5272a5167ff4e2918bec864.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1f986c181183d8e7e45655e6c5b5d5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/26/80ce020f-8921-4b20-98e9-e22fd9e1387d.png?resizew=417)
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
(2)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7acb5e90dbcc3f3340916a3a11cc4612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7044476eb6e90a781518c230f4637bc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
(3)如图3,若
![](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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2058ca6a9f448275b5cce997dc95650.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
您最近一年使用:0次
5 . 如图,在
中,
分别是
上的点,
是等边三角形,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef833181f116d79a3cbfff28c762f232.png)
(1)求证:
;
(2)求
的长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5881068127a39caf319492b4177204f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfa1a2af7e38d33634c462300df381f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef833181f116d79a3cbfff28c762f232.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/25/81936675-462b-49ba-81a2-04fa86b03d35.png?resizew=89)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0dff0f753ef6c0f0e3531cf07058a89.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
您最近一年使用:0次
6 . 如图,
为平行四边形
边
上一点,
分别在
上,且
,梯形
、
的面积分别为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22d0c1821ee87131a79831e234b6f3a6.png)
_____________
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfe69036073807aced6d9832aeef268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84944a5983b9614049ce9b63a24b686c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4670cf6b3eff7baded7f866411cc7a13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b1d29cbed8b6cd4a119c693251a283f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15cef7e63c1855362ad6a5289d7b461a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13f19b51f7f3e087934716b814ed2c8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22d0c1821ee87131a79831e234b6f3a6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/25/d2ced1ea-ac46-4e81-b04f-13bc998065cf.png?resizew=223)
您最近一年使用:0次
7 . 如图,
分别是
的边
上的点,
,且
分别为
边上靠近点
的三等分点,则下列结论正确的是______ .
;②
;③
;④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a51949f48ee8cf746851ba779b078e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3355e2fa0ac6c675f02ee36c3ced4f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca14fa885a9d04f04e0418b49b118241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a51949f48ee8cf746851ba779b078e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b5faf97cb142c3cbab7d3dcaece581.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c46c53c326c1cdebd57714369116bc68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dac5408b5abf83143564190239e39268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c936da33acd8a97e630f87b80d79564.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e8b61e5a31bdefe9519622d519386f.png)
您最近一年使用:0次
2024-01-25更新
|
63次组卷
|
2卷引用:湖南省岳阳市2023-2024学年九年级上学期期末数学试题
8 . 如图,在矩形
中,
,
,
是边
上的一点(不与
、
重合),
,垂足为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/25/7ecf94bf-6732-4826-831b-fe85a1931c92.png?resizew=113)
(1)求证:
;
(2)若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8689d619c2508c9000531fc1b8f1f21c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/25/7ecf94bf-6732-4826-831b-fe85a1931c92.png?resizew=113)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5b562e18c78e6186c75d5df12bf4b10.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbd74dde6151b7e11d0f5aa86a775df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0213c5787a5a6b38d11bceca5567f67.png)
您最近一年使用:0次
2024-01-24更新
|
76次组卷
|
2卷引用:湖南省娄底市2023-2024学年九年级上学期期末数学试题
9 . 如图,在正方形
中,
是等边三角形,
,
的延长线分别交
于点
,
,连接
,
,
与
相交于点
.给出下列结论:
;
;
;
.其中正确的结论有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/24/dafddc80-2679-4bc4-aeb2-00ea21a4d350.png?resizew=136)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4234cf4d8159f5df0333bcc269ffe099.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d1c43df4f2ee3823c06c8970120f566.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bac31a613a00c71525b796160b8b071.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305859804a907f1609fe8c165e273c38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b57131f09271bf4911875efe3e8600e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/24/dafddc80-2679-4bc4-aeb2-00ea21a4d350.png?resizew=136)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
10 . 已知:在边长为6的等边
中,点D在直线
上,连接
,以
为边作等边
,直线
交射线
于点F,连结
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/24/4533a85a-69de-4d4b-9fa0-a2b5808ccdeb.png?resizew=294)
(1)如图(1),若
,用含
的式子表示
______;
与
的位置关系是______;
(2)当点D在线段
上(不与点B、C重合)运动时,
①求证:
;
②求线段
的最大长度,并求出此时
的度数;
(3)点D在直线
上,若
时,利用备用图(2)求
的长.
![](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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/24/4533a85a-69de-4d4b-9fa0-a2b5808ccdeb.png?resizew=294)
(1)如图(1),若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/224efa375375f1ac848b0c15ee51aebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4ea2f99b7326d71004ef9bd4f39d61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
(2)当点D在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49af391253f5c06957e1b821d0b8abb7.png)
②求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
(3)点D在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714cc3707bba3bfdb56e251999be8592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
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