如图1,在
中,
,
为
边上一点,
,
为线段
上一点,
.
(1)求证:
;
(2)过点
作
交
的延长线于点
,试探索
与
的数量关系;
(3)如图2,若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.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/d39b6bef27de230acad352f25e954f4e.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/8c7038aae787bf5074438bf03af5034a.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb86b208b14ff9ce2cdb91cd0ee499a7.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b60d6c714e4858faa5395f1681a8328.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/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
(3)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ff29971ccc633d89832ffa9bd54afa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/2f2f097b-7155-4cca-9939-631f1eece637.png?resizew=417)
更新时间:2021-11-27 13:03:02
|
相似题推荐
解答题-证明题
|
较难
(0.4)
【推荐1】如图,在正方形
和正方形
中,M为
的中点,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/2a5a40a5-3fc1-4ae8-ae1d-1325dbb2941d.png?resizew=169)
(1)求证:
∽
.
(2)已知
,求
的面积.
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bbe6238101f23dfec110f76dde20239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f83910639ac9ea98d4980fd0820178d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6848beb667d196176641cdf1ec7393c2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/2a5a40a5-3fc1-4ae8-ae1d-1325dbb2941d.png?resizew=169)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f5e0e70ca3bfe38b2ec7d710430388d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91fe854021deac53e16830b6e057d041.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afd17945baf5b7dd6e957bd00c1aedb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/384a2097c9b0e987b1e8c79080727d72.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e80a8bd94cda556ea7444f187a670a9.png)
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【推荐2】如图,在四边形
中,对角线
和
相交于点
,且
.
(1)求证:
;
(2)如图
,点
在
边上,
与
相交于点
,
,若
,
,试探究
与
的数量关系,并说明理由;
(3)如图
,在(
)的条件下,
与
相交于点
,若
,
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee0f630195bcf6c3ca8f4fdeff43b082.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/3f7ab497-ece5-4cd1-9e59-92d6863709fc.png?resizew=349)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e41dd604f1f4705f749d6d7d93a580d3.png)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86d1125b47dec1c5e93143ee59ad862a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab926d89b65f26c12e3da73ef1e5cf68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b1424452ccf22cd5384c99cf4cdf01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
(3)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/330bb061040917c1b40304dc0ec1e57f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae8221601c7bd5c51fd520615581fa1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
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【推荐1】以
的边
,
为直角边向外作等腰直角三角形
和等腰直角三角形
,
,
,
,
是
中点,连接
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/15/21ab2e69-5d14-4ef1-a2c7-693e7343eb78.png?resizew=520)
(1)如图
,在
中,当
时,求
与
的数量关系和位置关系.
(2)如图
,当
为一般三角形时,(
)中的结论是否成立?请说明理由.
(3)如图
,若以
的边
,
为直角边向内作等腰直角三角形
和等腰直角三角形
,其他条件不变,(
)中的结论是否成立?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d09072f5be97caf5e942ae8fc16b0bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae4b97dd6e72a5ec06f44164a91b429f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331fd103c5fc0790c26b8481eec4217f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b946ab7e709bc126c34c90e08f36ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/179e005be24b9cca6495e40f97e531d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1165830b314a0dab65ea267e82bd3f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/15/21ab2e69-5d14-4ef1-a2c7-693e7343eb78.png?resizew=520)
(1)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d584b9a3d927c852b37104ef46dd395e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1165830b314a0dab65ea267e82bd3f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
(3)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d09072f5be97caf5e942ae8fc16b0bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae4b97dd6e72a5ec06f44164a91b429f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
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解答题-问答题
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较难
(0.4)
【推荐2】如图①,在Rt△ABC中,∠BAC=90°,
. 点P是边BC上一个动点(不与B重合),∠PAD=90°,∠APD=∠B,连接CD.
![](https://img.xkw.com/dksih/QBM/2020/4/2/2432981048500224/2433157588598784/STEM/8946ec02-efd3-4cee-a00c-ad3986960f8f.png)
填空:①
= ;②∠ACD的度数为 .
(2)拓展探究
如图②,在Rt△ABC中,∠BAC=90°,
. 点P是边BC上一个动点(不与B重合),∠PAD=90°,∠APD=∠B,连接CD. 请判断∠ACD与∠B的数量关系以及PB与CD之间的数量关系,并说明理由.
(3)解决问题
如图③,在△ABC中,∠B=45°,AB=4
,BC=12,P是边BC上一动点(不与B重合),∠PAD=∠BAC,∠APD=∠B,连接CD. 请直接写出所有CD的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d0b2193feb382727eb674e2e54d731f.png)
![](https://img.xkw.com/dksih/QBM/2020/4/2/2432981048500224/2433157588598784/STEM/8946ec02-efd3-4cee-a00c-ad3986960f8f.png)
填空:①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/897ded15cf9b0e0fb2400f17433be1e9.png)
(2)拓展探究
如图②,在Rt△ABC中,∠BAC=90°,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/199bacbeaee675ab275e9be7ccd40182.png)
(3)解决问题
如图③,在△ABC中,∠B=45°,AB=4
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
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解答题-应用题
|
较难
(0.4)
【推荐3】提出问题:早在古罗马时代,传说亚历山大城有一位精通数学和物理的学者——海伦.一天,一位将军专程拜访他,请教一个百思不得其解的问题:如图1,将军每天从军营A出发,先到河边饮马,然后再去军营B开会,怎样走才能使路程最短?据说海伦略加思索就解决了它.这个问题被称为“将军饮马”的问题.你知道海伦是怎样解决这个问题的吗?
研究方法:第一步作其中一定点的对称点,第二步连接对称点和另一定点,第三步找与河(对称轴)的交点.如图2,此时
最短,由轴对称的性质可得
,所以
最短,如图3,在直线上任取点
,
的理由是:____________.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/9/960681d0-9863-4438-8aee-7175d373fea5.png?resizew=394)
方法应用:对称变换在平面几何中有着广泛的应用,特别是在解决有关最值问题时是我们常用的思维方法,请你利用所学知识解决下列问题:
(1)如图4,在等边
中,
,
,
是
的中点,
是
上的一点,则
的最小值是______;(请直接写出答案)
(2)如图5,在平面直角坐标系中,已知点
,点
,点
在
轴上运动,当
的值最小时,点
的坐标是______;(请直接写出答案)
(3)如图6,
于点
,
于点
,且
,
,当点
在直线l上运动时,
的最小值是______.(请直接写出答案)
研究方法:第一步作其中一定点的对称点,第二步连接对称点和另一定点,第三步找与河(对称轴)的交点.如图2,此时
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9353e6ce79537299ee020db9bf7cd04a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a33110d85d5d61dd27bc702ecb695a8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab15f71acf24a48b4ea4efac5f09b718.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92e2d1d0a52183bcbe8d709b06981941.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/9/960681d0-9863-4438-8aee-7175d373fea5.png?resizew=394)
方法应用:对称变换在平面几何中有着广泛的应用,特别是在解决有关最值问题时是我们常用的思维方法,请你利用所学知识解决下列问题:
(1)如图4,在等边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c9acf72ea00d2b870041b35f2ecef3b.png)
(2)如图5,在平面直角坐标系中,已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/383f12cb70ca55eba4ff012771dbfa9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b02af485e17e7628fd5a3ace6e0a32ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a13ec9a812274ad0839f20ba17348687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)如图6,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e13b505788d3d02bf232ac637fc3a8ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa145a3e4f18f784ddf4869e0bf904c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37750daa8ba3b3fe3e9e2092f81c848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a13ec9a812274ad0839f20ba17348687.png)
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名校
【推荐1】【初步感知】
(1)已知,在
中,
.如图1,将边
,
同时绕着点
分别按逆时针、顺时针方向旋转
,得
、
,连接
,
,求证:
;
【类比探究】
(2)如图2,在
,
,若
,
,将边
绕着点
逆时针旋转
,得
,连接
,求
的长.
【拓展应用】
(3)如图3,在平面直角坐标系
中,点A为第二象限内一点,且
,点B坐标为
,若将边
绕点A逆时针旋转
得
,点D恰好在y轴上.将边
绕点B顺时针旋转
得
,求点C坐标.
(1)已知,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.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/0efc7b22d85ff04a0ac89743f0bea1f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421291381be28da4bd16560fd383b4a9.png)
【类比探究】
(2)如图2,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.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/a6c0927afc571a7c966c98192040979e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
【拓展应用】
(3)如图3,在平面直角坐标系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01cd2bf7c88e24c91625e0f20ba2a4bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f809aef106f5da271c4800b261a628f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/24/dec507ad-ac7c-484e-b6a7-3e6a7590777c.png?resizew=470)
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解答题-问答题
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较难
(0.4)
名校
【推荐2】如图,直线
与x轴、y轴分别交于点A、B,点P在x轴上运动,连接PB,将
沿直线BP折叠,点O的对应点记为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/13/8eba3945-813d-4727-9b3c-1561f89616f8.png?resizew=185)
(1)若点
恰好落在直线AB上,求OP的长;
(2)若Q是直线AB上的一个动点,当
的面积为10时,求Q的坐标;
(3)在x轴上是否存在点C,使得
为等腰三角形?若存在,直接写出点C的坐标,若不存在,说明理由;
(4)若C是
上的动点,当
是以BC为底的等腰三角形,求出点C的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6b098e17fa76c648424e9cadf558cc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c8561afa0f1454ea382a625d000a18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12fe32dfbd66709875c5b9f79c9496da.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/13/8eba3945-813d-4727-9b3c-1561f89616f8.png?resizew=185)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12fe32dfbd66709875c5b9f79c9496da.png)
(2)若Q是直线AB上的一个动点,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/831c4fbec375b0bfc8258ed9b1a81ef8.png)
(3)在x轴上是否存在点C,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(4)若C是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae652daf6059ff386f99bef2210518c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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解答题-证明题
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较难
(0.4)
【推荐3】在平面直角坐标系
中,点
,
分别在线段
,
上,如果存在点
使得
且
(点
,
,
逆时针排列),则称点
是线段
的“关联点”如图1.点
是线段
的“关联点”.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/2/047659ad-c3cb-433c-9bbc-9fffe2faaecb.png?resizew=421)
(1)如图2,已知点
,
,点
与点
重合.
①当点
是线段
中点时,在
,
中,其中是线段
的“关联点”的是___________;
②已知点
是线段
的“关联点”,则点
的坐标是_______________.
(2)如图3,已知
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/2/91f046cc-a0a4-4423-a7b1-29fe1ea45782.png?resizew=175)
①当点
与点
重合,点
在线段
上运动时(点
不与点
重合),若点
是线段
的“关联点”,求证:
;
②当点
,
分别在线段
,
上运动时,直接写出线段
的“关联点”
形成的区域的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef7c22cd532a109aa9765393d0412837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f2b4365497247dd56efee5a7d50800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/2/047659ad-c3cb-433c-9bbc-9fffe2faaecb.png?resizew=421)
(1)如图2,已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06f5d5c15db5be0ead8a86471573f1bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdd58ef950ddec3eb3ebf8e64f6228ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
①当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c7498b54657edf5b8f77e7bfb07869.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e7c4022500992c3580e5b80a48e0ba1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
②已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fecc47b97b5be8d29b3c92d28d5e0b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(2)如图3,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb050884d86a19bb016b92e76f5bcbeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc1eb76fe74cba30f7cbcde349ba80da.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/2/91f046cc-a0a4-4423-a7b1-29fe1ea45782.png?resizew=175)
①当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7b9032f12118782308c8c9836b53494.png)
②当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐1】抛物线
与
轴交于
、
两点(点
在点
的左侧),与
轴交于点
,其对称轴是直线
,且
.
(1)求抛物线的解析式;
(2)将抛物线沿
轴平移
个单位,当平移后的抛物线与线段
有且只有一个交点时,求
的取值范围或
的值;
(3)抛物线上是否存在点
,使
?若存在,求
点坐标;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d8de071a9c22c96a59b172d76c127e.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/7f9e8449aad35c5d840a3395ea86df6d.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/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49c8dbc31b2e14067ef2f34b4e25f114.png)
(1)求抛物线的解析式;
(2)将抛物线沿
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ebd1d359040a1172a944ded96ed0127.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)抛物线上是否存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c2dbce432b2e7d252ae0268b40317f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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解答题-证明题
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较难
(0.4)
【推荐2】如图,以
为斜边作
和
,
,
,垂足为点
,点
是线段
上一点,连接
分别交
于
,过点
作
,交
延长线于点
,
.
(1)求证:
;
(2)若
,求
的长;
(3)若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbdc99280024a5eac19e3e229a20ff5e.png)
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53699af4515b51275539fe89a3a52607.png)
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9681f9d187e18d23f604499a23727daf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8807117d0d649419fdda04c531cdc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/219e333d3371bad86d3993360bf28070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab00e0cff0876c4183a47f1272cf9928.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/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9da1cbbc6a58ccf7d00743be10e629dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23d4611cf49e3024586353f2aef8c13e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5024eaafc4d7abdf98af69932cc5c76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/332a3875bb7ab434e4c0d003cb02d858.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/311ff89f8d30f00fc30e661c7fc7a8af.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1496042c1d721cffd25053e997a9a97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbdc99280024a5eac19e3e229a20ff5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac97e6740365c85ad857aff85cefbe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53699af4515b51275539fe89a3a52607.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7294f5ae2a24ff42e84cd9773b2a7287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/8/089b6ad3-b156-4eec-8ec3-8345313ed882.png?resizew=511)
您最近一年使用:0次