如图1,等腰△ABC内接于
,
,连结
,过点B作
的垂线,交
于点D,交
于点M,交
于点
,连结
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/07d4da0d-1ac8-4995-a989-cf9211298b08.png?resizew=452)
(1)若
,请用含
的代数式表示
;
(2)如图2.
①求证:
;
②若
,
,求
的值.
(3)如图3,连结
,若
,
,求y关于x的函数表达式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/07d4da0d-1ac8-4995-a989-cf9211298b08.png?resizew=452)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02b1096427485eaefbfff0490ab80da3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02db97211bef92c2045d135ae7043f12.png)
(2)如图2.
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e70dea56a16782a1bd635327770e6784.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/241501c6312d3da4f3d9a5dc79f332bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/616053aae9e0f8a377b73110679c5d78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0cdbbcd3b4fbd05cf6053ee61eca798.png)
(3)如图3,连结
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebac36c2cdc21f5503a6ca14476cb5cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b0e599207ccc96c62bb1e1e591d0652.png)
更新时间:2024-01-04 19:47:44
|
相似题推荐
解答题-证明题
|
困难
(0.15)
名校
【推荐1】如图,
中,在平面内将线段
绕点A逆时针旋转
得到线段
,过点D作
,分别交
、
于点E、F,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/24/91e1e8eb-5a9b-4b27-b5d8-b4b2d9743989.png?resizew=521)
(1)如图1,若
,
.求
的长度.
(2)如图2,若
,求证:
.
(3)如图3,在(2)问的条件下,若
,点P在射线
上运动,当
取得最小值为
时,在平面内将
绕点B逆时针旋转
度得到
,当点
恰好在线段
上时,请直接写出
的面积的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bffd657e48b15b9b54a55817e2c26b22.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/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/24/91e1e8eb-5a9b-4b27-b5d8-b4b2d9743989.png?resizew=521)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9693033557682abfd0bb71890fe2236e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7317d43414d8d968f0cb11f533f1de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3313d2e682cf6220773ede4ef5a1630a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc1cc7b820262053106a65b544e09996.png)
(3)如图3,在(2)问的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c786b48d3aff4d2f73f83cc1a32a094a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5b11c09db2d6b7fe2af5b63b8ba8cc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb8fb6f3d7540831a9e97d3b184a491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/729684f958ad60b8e905fe1e1da53c03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a76ffa820a9a8ad7f536e01773249a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/159c881d8a2ca3796076523b06c2806e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee6765a83140d745a6de4c85d9b6b50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25c98be77bbbdabbc0b804b407762a66.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
【推荐2】如图1,以平行四边形
的顶点O为坐标原点,以
所在直线为x轴,建立平面直角坐标系,
,D是对角线
的中点,点P从点A出发,以每秒1个单位的速度沿
方向运动到点B,同时点Q从点O出发,以每秒3个单位的速度沿x轴正方向运动,当点P到达点B时,两个点同时停止运动.
![](https://img.xkw.com/dksih/QBM/2021/5/5/2714335681585152/2714402945875968/STEM/948cb7e544584b17a76ec41f46daf97d.png?resizew=208)
(1)求点A的坐标.
(2)连结
,
,
,当
经过点D时,求四边形
的面积.
(3)在坐标系中找点F,使以Q、D、C、F为顶点的四边形是菱形,则点F的坐标为________.(直接写出答案)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/025a070d290507aee9e6a03d7abd3f59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2021/5/5/2714335681585152/2714402945875968/STEM/307046748dc04d5eb59798ba430f7faa.png?resizew=206)
![](https://img.xkw.com/dksih/QBM/2021/5/5/2714335681585152/2714402945875968/STEM/948cb7e544584b17a76ec41f46daf97d.png?resizew=208)
(1)求点A的坐标.
(2)连结
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7d81d09859b280b424855dec3c5ad99.png)
(3)在坐标系中找点F,使以Q、D、C、F为顶点的四边形是菱形,则点F的坐标为________.(直接写出答案)
您最近一年使用:0次
解答题-证明题
|
困难
(0.15)
名校
【推荐1】已知:如图,
内接于
,点E为弧
上一点,延长
交
于点D,且
.
(1)如图1,连接
,求证:
;
(2)如图2,射线
交
于点F,弦
于点H,连接
交
于点K,若
,求证
;
(3)如图3,在(2)的条件下,连接
,设
与
交于点N,连接
,若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f90c780dac29ff8b7df5881d3b33abab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/532aece6cfd67e2a97977eed978dbf2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/3/fc6ea68d-5f7d-4b2b-859a-a2ab5abf0ee3.png?resizew=511)
(1)如图1,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95204cfe80bd89ba08d319f5fa200f4e.png)
(2)如图2,射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da5af132cde2fa211adebf4ef6e2d6fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c884b508394b3ab50734b584d9ec783c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f48600d1afe7aa3a1e85cfb46890a25d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d365cc7ce9022654091eee60bc1c2b7.png)
(3)如图3,在(2)的条件下,连接
![](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/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66810ba0bcc98932e6e1a36a132e9e60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72811997a9f65e01fcc1d318bbd4d0dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
名校
【推荐2】在四边形
中,
,
;
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/15/72c220cc-f868-4b95-bf5b-48e5c43799ff.png?resizew=415)
(1)如图1,已知
,求得
的大小为___________;
(2)已知
,
,在(1)的条件下,利用图1,连接
,并求出
的长度;
(3)问题解决:如图2,已知
,
,现需要截取某种四边形的材料板,这个材料板的形状恰巧符合如图2所示的四边形,为了尽可能节约,你能求出这种四边形面积的最小值吗?如果能,请求出此时四边形
面积的最小值;如果不能,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/284e282bb1d9fbf8634b3506ee5358ab.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/15/72c220cc-f868-4b95-bf5b-48e5c43799ff.png?resizew=415)
(1)如图1,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/691048ce61c91a8a3680fa3025193160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d03e1b361ba44151a14e80db0f88d02.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e673ef2d48215ca84a48377f17d6df00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(3)问题解决:如图2,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ac2a5b9f08b1c21cabf0ec9b2cec3b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/454328a8e75953fdb0835ce80d9566e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
名校
【推荐1】已知一次函数:
与
轴交于点
,与
轴交于点
. 抛物线
(
、
为常数)过定点
,连接
,点
为线段
上一动点.
(1)求出点
的坐标;
(2)过
作
于点
,
于点
,设
点横坐标为
,
长度为
,试求
关于
的函数解析式;
(3)①当
,
时,该抛物线上存在唯一的点
使
,求此时抛物线的解析式;
②过点
作
交线段
于点
,连接
并延长交
的外接圆于点
,当点
在
上移动时,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c30056990f61f896705dbe3a1fd9d27c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/93618562abdcb38a2abe4fb9c69e77d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(1)求出点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1c8e6c6a7c096d0ccb79fa0e2458ce2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/675e5e245e13ce0658233bed7a7872e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/782d203340f6b721c4e9aac57a2a6268.png)
②过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bffd657e48b15b9b54a55817e2c26b22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebcc52a06d806fde891e09a0a389fcd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/040b521219c12e29a906bfe2c6ab8748.png)
![](https://img.xkw.com/dksih/QBM/2021/5/17/2722768901931008/2731308397821952/STEM/c4f5ec13-fd9b-4afb-b3b5-f18cc1e87871.png)
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解答题-问答题
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困难
(0.15)
名校
【推荐2】如图,已知AB是⊙O的弦,OB=1,C是弦AB上的任意一点(不与点A、B重合),连接CO并延长CO交⊙O于点D,连接AD.设∠B=α,∠ADC=β.
(1)求∠BOD的度数(用含α,β的代数式表示);
(2)若α=30°,当AC的长度为多少时,以点A、C、D为顶点的三角形与B、C、O为顶点的三角形相似?请写出解答过程.
(3)若α=β,连接AO,记△AOD、△AOC、△COB的面积分别为S1,S2,S3,如果S2是S1和S3的比例中项,求OC的长.
(1)求∠BOD的度数(用含α,β的代数式表示);
(2)若α=30°,当AC的长度为多少时,以点A、C、D为顶点的三角形与B、C、O为顶点的三角形相似?请写出解答过程.
(3)若α=β,连接AO,记△AOD、△AOC、△COB的面积分别为S1,S2,S3,如果S2是S1和S3的比例中项,求OC的长.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/14/93a0b5b6-5d3e-4690-83ae-65b4fab367a6.png?resizew=424)
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解答题-问答题
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困难
(0.15)
【推荐3】问题提出
(1)如图①,
内接于
,过点
作
的切线
,在
上任取一个不同于点
的点
,连接
、
,比较
与
的大小,并说明理由.
![](https://img.xkw.com/dksih/QBM/2021/5/25/2728873680265216/2730607512879104/STEM/685679b5-82eb-42d1-8c46-ddef7a464fee.png)
问题探究
(2)如图②,正方形
,边长为2,在
边上是否存在点
,使
最大?若存在,确定点
的位置,并求此时
的值;若不存在,请说明理由.
问题解决
(3)如图③,四边形
为某工作室的平面示意图,线段
、
、
为三面墙,
为入户门处,其中
,
,
,
米,
米,
米.出于安全考虑,负责人想在墙上安装监控装置
,用来监控并记录进出的人员,为了让监控效果最佳,要求
最大.试问在墙上是否存在一点
,使得
最大?若存在,请求出此时
的值及
点的位置;若不存在,请说明理由.
(1)如图①,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb686e4f5e3938575bc547e849d5513f.png)
![](https://img.xkw.com/dksih/QBM/2021/5/25/2728873680265216/2730607512879104/STEM/685679b5-82eb-42d1-8c46-ddef7a464fee.png)
问题探究
(2)如图②,正方形
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb686e4f5e3938575bc547e849d5513f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d513d065fad591a106cca32a25f4d3b1.png)
问题解决
(3)如图③,四边形
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9060f03b9ee41d70d135b1e1a8902ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/998329f9cdb86f5d60d7d5d70fc3781e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7563552949cc6db7e5eec68bb83228a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8c83b688911f105cffe00d6d54eea13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b03bb56c7e76954b192bd8595a0865a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45a8a837c11c07073da3ff751d70278.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45a8a837c11c07073da3ff751d70278.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa12542a1179dad4e734920f2a1c8c0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/2021/5/25/2728873680265216/2730607512879104/STEM/803e2961-1088-4412-bb91-190964190e0c.png)
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解答题-证明题
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困难
(0.15)
【推荐1】(1)如图1,在正方形
中,点E为边
上一点,将
沿
翻折得
,延长
交边
于点F,连接
.求证:
.
(2)如图2,在平面直角坐标系
中,点A的坐标为
、点B的坐标为
且a,b满足
,点C在y轴正半轴上,
.
①
,
;
②求点C的坐标;
③如图3,延长
至点D,使
,过点D作
轴于点E.设G为y轴上一点,点P从点E出发,先沿y轴到达G点,再沿
到达B点.若点P在直线
上运动速度为定值
,在y轴上运动速度为
,要使P点按照上述要求到达B点所用的时间最短,则此时点G的坐标是 (直接写答案).
![](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/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d43af5a1c59dfeb9819827b19f72db1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589786dd7c3a2679c3230b671cd232d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192155e6a3aade305b76b1eb7c75e30c.png)
(2)如图2,在平面直角坐标系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a48bbf5c73c70b71f7dd3bac03b24b28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cf75310b48015af5b03e8b4ea7a16ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fabe33b24e9cabf7a5530bc75d37da2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51716dccb6cbb106495896d00a2fce5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b27e47690ed332c573186992b6d25654.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
②求点C的坐标;
③如图3,延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72992bd796ca2e6ddfcd9922d061b79b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e8344999680784650f29a28159b1edf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4083c581c6027c4b2ae7e3b3749f485.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4083c581c6027c4b2ae7e3b3749f485.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc13a607ac0c7f76d252d7cb1bb040fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68116f7a1040d2332c3666f3d1baec54.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/19/4361b9d3-181f-410a-a4cc-74399bc65f73.png?resizew=521)
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解答题-问答题
|
困难
(0.15)
名校
【推荐2】把矩形
放置在如图所示的平面直角坐标系中,点
在边
上,把点
沿
折叠,使点
恰好与原点
重合,已知
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/10/ec2b2b75-5c44-4f1b-9c72-aba2ec4ce57f.png?resizew=422)
(1)点
的坐标为______.
(2)已知抛物线经过点
,
,且与直线
仅有一个交点,求该抛物线的解析式.
(3)在(2)的条件下,若该抛物线上存在点
使得
,请直接写出点
的横坐标;若无,则请说明原因.
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7788830ed1cb3b9c5988f70f43595f2e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/10/ec2b2b75-5c44-4f1b-9c72-aba2ec4ce57f.png?resizew=422)
(1)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)已知抛物线经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d99ddffc7954c0d65628418fa1180233.png)
(3)在(2)的条件下,若该抛物线上存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d07a55de33c005a56ae8dee0c9974c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
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