如图,在直角坐标系中,点A(0,1),点B(3,0),点C(4,3).
(1)判断△ABC的形状并说明理由;
(2)在线段OC的右侧,以OC为边作等腰直角△OCD,点D的坐标为 .
(1)判断△ABC的形状并说明理由;
(2)在线段OC的右侧,以OC为边作等腰直角△OCD,点D的坐标为 .
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/8/5eab03a5-a6c9-4f50-98ff-fcb61369da05.png?resizew=200)
更新时间:2020-02-03 21:12:09
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相似题推荐
解答题-问答题
|
适中
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名校
【推荐1】已知,在平面直角坐标系中,
轴于点B,点
满足
,平移线段
使点A与原点重合,点B的对应点为点C.
_____,
_____;点C坐标为______;
(2)如图1,点
在线段
上,求m、n满足的数量关系;
(3)如图2,若点E是射线
上一动点,连接
,分别作
与
的邻补角的角平分线
与
,两线所在的直线交于F点,试问当点E在射线
(点E不与O、B重合)上运动过程中,
的值是否会发生变化?若变化,请说明理由,若不变,请求出其值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24624dffd30b66a5e4de57362b32b2a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c65d3d6119b18fd2427497cbd413c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caffc750925de5655b8b839b51119fab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
(2)如图1,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5f1c7c97402f4214c1a1561d83eccef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(3)如图2,若点E是射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/418ebb89d29f4f631b055c911e8d178a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db866ecc0c098bfc32ec8a43b65bdd58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0c845bb8ceaa4caef3af4f1e4366b49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b30405bc06a6714f248d6390b9bb2583.png)
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【推荐2】在平面直角坐标系中,点
,
,
,且
.
,求点
,点
的坐标
(2)在(1)下,过点
作
平行
轴,交
于点
,求点
的坐标;
(3)
,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d8da179d60dd9ec6ece6de442ae1b06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002f66f22c25da388793748a8106dc31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d03310fa9440053c57d878acc06d02d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b152aa3f4bdbc7d695cea89821912bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)在(1)下,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/8455657dde27aabe6adb7b188e031c11.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f8a363c828b940f35761b3f0ef83c41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e32ef674f2700d844223d2654a9ff605.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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解答题-证明题
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【推荐1】如图①,在等腰三角形
中,
,
,点
在
上,
,
垂直于直线
于点
.
(1)求
的度数.
(2)求证:
.
(3)如图②,若点
是
的中点,请直接写出
,
,
三条线段之间的数量关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](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/9fc13fe21e64d9b45614ed43be847904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727ad3e630a224303d6d3b8ad5c114ba.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b68e31c0164696680d71f98ad8834618.png)
(3)如图②,若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdc93e193fad261689949a52819753f0.png)
![](https://img.xkw.com/dksih/QBM/2019/7/4/2239448306319360/2240506071924736/STEM/42f13278d45b486d96ca90a93f28b14c.png?resizew=351)
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【推荐2】如图,在Rt△ABC中,∠BAC=90°,D是BC的中点,连接AD,E为AD的中点,过A作AF∥BC交BE延长线于F,连接CF.
![](https://img.xkw.com/dksih/QBM/2020/4/17/2443192122318848/2443339464163328/STEM/b08c22ccf93345febf35a0525bff373c.png?resizew=159)
(1)求证:四边形ADCF是菱形;
(2)在不添加任何辅助线的情况下,请直接写出与△ACD面积相等的三角形(不包含△ACD).
![](https://img.xkw.com/dksih/QBM/2020/4/17/2443192122318848/2443339464163328/STEM/b08c22ccf93345febf35a0525bff373c.png?resizew=159)
(1)求证:四边形ADCF是菱形;
(2)在不添加任何辅助线的情况下,请直接写出与△ACD面积相等的三角形(不包含△ACD).
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【推荐3】如图,在平面直角坐标系中,点
为坐标原点,
的顶点
、
的坐标分别为
、
,顶点
在
轴的正半轴上,
的高
交线段
于点
,且
.
![](https://img.xkw.com/dksih/QBM/2019/9/19/2294173518651392/2296048013066240/STEM/c69f43fc7cf34f35add681491fa06f8b.png?resizew=238)
(1)求线段
的长;
(2)动点
从点
出发沿线段
以每秒
个单位长度的速度向终点
运动,动点
从点
出发沿射线
以每秒
个单位长度的速度运动,
、
两点同时出发,且点
到达
点处时
、
两点同时停止运动,设点
的运动时间为
秒,
的面积为
,请用含
的式子表示
,直接写出相应的
的取值范围;
(3)在(2)的条件下,点
是直线
上的一点且
,是否存在
值,使以点
、
、
为顶点的三角形与以点
、
、
为顶点的三角形全等?若存在,请求出符合条件的
值,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/bd243fab0af865af67a2ab817e909cf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c3a2f5b0702ea9fbb9dc8904579737.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/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ff29971ccc633d89832ffa9bd54afa3.png)
![](https://img.xkw.com/dksih/QBM/2019/9/19/2294173518651392/2296048013066240/STEM/c69f43fc7cf34f35add681491fa06f8b.png?resizew=238)
(1)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
(2)动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1642eec556eb252de9c1ab7bb5ca90b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/255a92e9f65c99ddc5deaffc85040203.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)在(2)的条件下,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2a893fc8b2e9d55c9cdf8aceb3827a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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【推荐1】“在直角三角形中,如果一个锐角等于30°,那么它所对的直角边等于斜边的一半”,在探究该定理的证明过程中,某小组的思路是:作斜边的中垂线,通过全等三角形的对应边等使问题得到解决.请根据该小组的思路完成下面的作图与填空:
已知:在
中,
,
,求证:
.
证明:用直尺和圆规作
的中垂线,垂足为点D,交
于点E,连接
.(只保留作图痕迹)
∵ ①
∴
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a84f30445907f2aeb426c73a66cef2a1.png)
∵![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6508c072fb5e630411ba1c31e5536f2.png)
∵
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3018c687427b6257767eda4a8c6612.png)
∴ ②![](https://staticzujuan.xkw.com/quesimg/Upload/formula/397ee9610c6e4725317e8343f61563e4.png)
∵在
中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79e50ed7cd8c2b2c1541bcfaeb26af4e.png)
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8f233e985d27eea751d4d0bea9297c8.png)
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a67eec35ab1c473e594ebc2259c35f95.png)
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71ccf5ae868b0d116a96d42c2dd8ca68.png)
∴在
和
中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95d6ac250b5e5d96b68c11abc2f42b45.png)
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd724c827b73ea8ee235977bd1e44d71.png)
∴ ④
∵![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a84f30445907f2aeb426c73a66cef2a1.png)
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03aa7b8bbf6d82c5607195c1116b6873.png)
已知:在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3018c687427b6257767eda4a8c6612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03aa7b8bbf6d82c5607195c1116b6873.png)
证明:用直尺和圆规作
![](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/4eedae8d316c76e3d0b451256de03fb9.png)
∵ ①
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/553a93e0b6156befa00b50bdfaef95d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc1a9ed724ceece5e56d21ac4a3213cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a84f30445907f2aeb426c73a66cef2a1.png)
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6508c072fb5e630411ba1c31e5536f2.png)
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/553a93e0b6156befa00b50bdfaef95d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3018c687427b6257767eda4a8c6612.png)
∴ ②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/397ee9610c6e4725317e8343f61563e4.png)
∵在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79e50ed7cd8c2b2c1541bcfaeb26af4e.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8f233e985d27eea751d4d0bea9297c8.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a67eec35ab1c473e594ebc2259c35f95.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71ccf5ae868b0d116a96d42c2dd8ca68.png)
∴在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0acc93490a6a784eb62201d93dd93d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfa1a2af7e38d33634c462300df381f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95d6ac250b5e5d96b68c11abc2f42b45.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd724c827b73ea8ee235977bd1e44d71.png)
∴ ④
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a84f30445907f2aeb426c73a66cef2a1.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03aa7b8bbf6d82c5607195c1116b6873.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
名校
【推荐2】如图,已知等腰
中,
,
,
,点B关于直线
的对称点为点D,连接
,连接
交
于点G,连接
交
于点E,交
于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/15/8c8358d9-458d-41c2-afe1-5ff08aedca26.png?resizew=249)
(1)如图1,当
时,
①补全图形;
②探究
与
的数量关系,并说明理由;
(2)在直线
绕点A顺时针旋转的过程中
,当
为等腰三角形时,利用备用图直接求出α的值为______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab926d89b65f26c12e3da73ef1e5cf68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/482002db587fa5dcc33454ebe5ace500.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.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/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/15/8c8358d9-458d-41c2-afe1-5ff08aedca26.png?resizew=249)
(1)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/671fdac69c4951a72cc06f6d598044dc.png)
①补全图形;
②探究
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
(2)在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41dbc6b37f1cdce9a00532493d357c85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐3】如图1,已知点A(a,0),B(0,b),且a、b满足
,
的边AD与y轴交于点E,且E为AD中点,双曲线
经过C、D两点.
(1)若点D点纵坐标为t,则C点纵坐标为 (含t的代数式表示),k的值为 ;
(2)点P在双曲线
上,点Q在y轴上,若以点A、B、P、Q为顶点的四边形是平行四边形,试求满足要求的所有点P、Q的坐标;
(3)以线段AB为对角线作正方形AFBH(如图3),点T是边AF上一动点,M是HT的中点,MN⊥HT,交AB于N,连接FN,当T在AF上运动时,试判断∠ATH 与∠AFN 之间的数量关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f97ca3031a75d28b56f3d01b3a3b352b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
(1)若点D点纵坐标为t,则C点纵坐标为 (含t的代数式表示),k的值为 ;
(2)点P在双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
(3)以线段AB为对角线作正方形AFBH(如图3),点T是边AF上一动点,M是HT的中点,MN⊥HT,交AB于N,连接FN,当T在AF上运动时,试判断∠ATH 与∠AFN 之间的数量关系,并说明理由.
![](https://img.xkw.com/dksih/QBM/2018/5/31/1957015345799168/1963108868857856/STEM/3aee1fe8-936d-4023-a154-62d8208d5e05.png?resizew=596)
您最近一年使用:0次