如图1,在
中,
为锐角,
,以
为直径的
交边
于点
,连接
.
,则
________
.
(2)若
,求
的值;
(3)如图2,过点
作
,请仅用无刻度的直尺在射线
上作点
,使得
与
相切(保留作图痕迹,不写作法).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65c5840e0454fdec7d2158072c43b8db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2350fe8426a29f5dc63c7fdda29b2ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d2530e7023b2345c651e8f53629ff1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a12c5cb8099cdabd53f97d32e817933.png)
(3)如图2,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/126fdae0b1adc7361f945187b861fb20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
更新时间:2024-05-17 19:14:09
|
相似题推荐
解答题-作图题
|
适中
(0.65)
名校
【推荐1】如图,在
中,
是钝角.
的垂直平分线,分别交
于点D,E;(不写作法,保留作图痕迹)
(2)连结
,
①若
,则
的周长为__________;
②若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5dc62e10004e73908091338362917da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)连结
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7743ddf60514a7b1115dbf6ea011b70.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ebb33adb2310a6e03918761e68204a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15f9b8f9f159077d59974c8a70c28563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
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解答题-问答题
|
适中
(0.65)
【推荐2】在
中,
,
,点
在
边上,
和
关于直线
对称,
的平分线交
于点
,连接
.
(1)求
的度数;
(2)设
.
①当
为等腰三角形时,请求出此时m的值;
②
有可能是直角三角形吗?若有,请直接写出相应m的值;若没有,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8b3ccbed8aa44da96fbf16bb9978b48.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/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79c5041878c15de69253ca11a03ab1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b400a6c61254b81d4ccc5a2a7cf4c967.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/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/27/55524ca0-0568-422a-bddc-9e83999f22a5.png?resizew=182)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76ee4e24fdbe22a139a9dee636f76182.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7123fba1c19326e3f3050c9287ff44c3.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/029ad83f1a3262048cba0e650b63e929.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/029ad83f1a3262048cba0e650b63e929.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,在
中,
的垂直平分线交
边于点
的垂 直平分线交
边于点
.
求
的周长.
求
的度数.
判断△AEN 的形状并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ad5e9d0226283267732c2a68ce0704c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c480c1cb47cf8f7864b6f4234da0280.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e7406923eb72472a4dadfc0dbf9c2f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d80a4d5dfef80798312325a27d55abf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2b15b3b9464e29dceec3d29b9f51d7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cd151c4fccf42e84b0bfa07b12227b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faa91feb8bd9957a1fa2672c5fee738c.png)
![](https://img.xkw.com/dksih/QBM/2020/5/4/2455342947155968/2455493517893632/STEM/8b100f48-3375-46e2-bf38-0edc382c34f4.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】(1)如图,已知
,P为边
上一点,请用尺规作图的方法在
边上求作一点E,使点E到P、C两点的距离相等.(保留作图痕迹,不写作法)
,
,则
的周长是_______cm.
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c92961bc9c9d2a1814fdf30e5e1aebe4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d1171b435272ceb9f2ab58ba2a86de9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/729684f958ad60b8e905fe1e1da53c03.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,已知
是
的外角
的平分线,交BC的延长线于点D,延长
交
的外接圆于点F,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/37bc7de8-b3f8-4067-a035-f53e53980ade.png?resizew=228)
(1)求证:
;
(2)若
为
的外接圆直径,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6344778ed1e75c1a99e2268468081867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa175408eddbdfddfbe9701646d62b92.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/37bc7de8-b3f8-4067-a035-f53e53980ade.png?resizew=228)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe86f847b4da613c90a7bdefcd994006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61a62d193e1f998f4a3c7ee7670c6bcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,在
中,以
为直径的
分别交
,
于点
,
,过
点的圆的切线交
的延长线于点
,
.
(1)求证:
;
(2)若
,
,求
的半径的长.
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a54f5ece920212b5a6981e19c8537b6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/12/160c1ae3-701c-4b36-8cf3-82d706dc2f57.png?resizew=165)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6db04a0e4c67c9510b154f70413435f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267ace52b64e1e7dfc5211e033255b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】已知,如图,D是
中BC边的中点,
,
, AD=2
![](https://img.xkw.com/dksih/QBM/2012/2/25/1573346414567424/1573346477785088/STEM/3f1c7d7909a145eea09a5ede91d4cac2.png?resizew=192)
(1)求
;
(2)AC的长及
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce0d7095ddd69d6ceaf1065b1bc2c79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/788ef90d6ffaa94e8d611574b965a363.png)
![](https://img.xkw.com/dksih/QBM/2012/2/25/1573346414567424/1573346477785088/STEM/3f1c7d7909a145eea09a5ede91d4cac2.png?resizew=192)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcb84bdfe37968f871b8483fb30cfb29.png)
(2)AC的长及
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐2】如图,矩形ABCD的对角线相交于点O,DE∥AC,CE∥BD.
(1)求证:四边形OCED是菱形.
(2)当∠ACB=30°,菱形OCED的面积为
,求AC的长.
(1)求证:四边形OCED是菱形.
(2)当∠ACB=30°,菱形OCED的面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/24/412384ac-599f-4ddd-a5b7-2baa037f2eb5.png?resizew=153)
您最近一年使用:0次