在
中,弦
平分圆周角
连接
,过点D作
交
的延长线于点E.
是
的切线;
(2)求证:
;
(3)如图2,若
且B是
的中点,
的直径是
求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/144d88e97bdb4e43d76507c7df491cc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/066cd386723885c535ea720f5817847a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35fe5b93974dd7f6dd5db2038461d733.png)
(3)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc6271bf0e757b2dbf99afbf56679db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33de9fbaa6f67d75fb2d97fa061e96f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
更新时间:2024-06-04 09:55:25
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】在正方形
中,O是对角线
上一点,正方形
绕点O旋转.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/13/d25b8382-784d-4e62-bad6-b4a3265e91aa.png?resizew=355)
(1)当点O为
中点时,
①如图1,正方形
的边
分别与
交于点E、F,连接
,猜想线段
与
之间存在的等量关系(无需证明);
②如图2,正方形
的边
分别与
的延长线交于点E、F,连接
,判断①中的猜想是否成立.若成立,请证明;若不成立,请说明理由:
(2)如图3,当点O不是
中点时,正方形
的边
分别与
交于点E、F,若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82e589ac5409ccbcf8f651fbc8a3ab6b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/13/d25b8382-784d-4e62-bad6-b4a3265e91aa.png?resizew=355)
(1)当点O为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
①如图1,正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82e589ac5409ccbcf8f651fbc8a3ab6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432f290ef8522345e7c4ab0b0c079e4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd3724385f98a2415ba27f8df4c31d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a62645bd831f1cb6b385f95ea1b7f4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
②如图2,正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82e589ac5409ccbcf8f651fbc8a3ab6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432f290ef8522345e7c4ab0b0c079e4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd3724385f98a2415ba27f8df4c31d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)如图3,当点O不是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82e589ac5409ccbcf8f651fbc8a3ab6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432f290ef8522345e7c4ab0b0c079e4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd3724385f98a2415ba27f8df4c31d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddee53d76561daf7020a5ac5a0e24822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fd9ecbdb3bc32e229ee2cd0f0b7b454.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,已知正比例函数
和一个反比例函数的图像交于点
,
.
![](https://img.xkw.com/dksih/QBM/2020/7/16/2507114483466240/2507320859738112/STEM/d5756f108d3d4aa9be0a670da7e5e888.png?resizew=241)
(1)求这个反比例函数的解析式;
(2)若点B在x轴上,且△AOB是直角三角形,求点B的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d585d2d6643471640905d234d9538c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58af02f927470f27a060ed0e839f1e60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75b33baf3a1c3c89e8ed3c1ede7cc197.png)
![](https://img.xkw.com/dksih/QBM/2020/7/16/2507114483466240/2507320859738112/STEM/d5756f108d3d4aa9be0a670da7e5e888.png?resizew=241)
(1)求这个反比例函数的解析式;
(2)若点B在x轴上,且△AOB是直角三角形,求点B的坐标.
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,
内接于
,
是
的直径,
.点E在
延长线上,
.过点E作
,交
的延长线于点D.求证:
是
的切线.
![](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/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b8b98b2f83279a49e94d9f48c5e6f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b16b77e8f813911296112fd906d4cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b84c9d873289f99d8eb733d12899280.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/3d97cdc586744d208b6f69c9813af977.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,已知等腰△ABC,AB=AC,⊙O是△ABC的外接圆,点D是
上一动点,连接CD并延长至点E,使得AE=AD.
(1)求证:①∠DAE=∠BAC;②EC=BD;
(2)若EC∥AB,判断AE与⊙O的位置关系;
(3) 若∠CAB=30°,BC=6,点D从点A运动到点C处,则点E运动路径的长为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
(1)求证:①∠DAE=∠BAC;②EC=BD;
(2)若EC∥AB,判断AE与⊙O的位置关系;
(3) 若∠CAB=30°,BC=6,点D从点A运动到点C处,则点E运动路径的长为 .
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/18/d09dbf5f-c1be-4655-a25c-5da74e3755cc.png?resizew=145)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐1】如图,在Rt△ABC中,∠C=90°,AC=3,∠BAC=60°,AD平分∠BAC交BC于点D,过点D作DE
AC交AB于点E,点M是线段AD上的动点,连结BM并延长分别交线段DE,AC于点F、G.
(1)求CD的长;
(2)若点M是线段AD的中点,求
的值;
(3)点M在移动过程中,当△CGE为直角三角形时,求DM的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dbfed4adc6b576f875ce75e35ed4b34.png)
(1)求CD的长;
(2)若点M是线段AD的中点,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1038936f515962f6f9e4b73032937dca.png)
(3)点M在移动过程中,当△CGE为直角三角形时,求DM的长.
![](https://img.xkw.com/dksih/QBM/2021/11/26/2859401546375168/2860185259032576/STEM/cdf1122a186c48fb8e329b305d969056.png?resizew=284)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐2】如图,如图,四边形ABCD、CDEF、EFGH都是边长为1的正方形.
(1)△ACF与△ACG相似吗?说说你的理由.
(2)求∠1+∠2的度数.
(1)△ACF与△ACG相似吗?说说你的理由.
(2)求∠1+∠2的度数.
![](https://img.xkw.com/dksih/QBM/2020/12/16/2615570204057600/2618803616186368/STEM/939d92ff-62ab-4666-8117-8304d4b44325.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,
为
的直径,
为圆上异于A、B的点,
为
上一点,连接
并延长交
于点
,连接
,过点
作
于点
.
;
(2)若
的半径为
,
,
,求
的长.
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afeda89601db5178bf6f48eb93ef5820.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fbee06d305abf6692125513dc3757f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305c732ea337f11bd01790d2e57f92c3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60634341a9603e24b2bbc6960abe3d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23190378f340ce5e8306f88c3caef1dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.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,
为
的直径,点
为圆周上一点,
的延长线交
的切线
于点
,
的延长线交
的切线
于点
.
(1)若
,求
的度数;
(2)证明:
;
(3)若
,
,求
的长.
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/3/8ffd9790-c525-4796-929d-26f97ec87dfe.png?resizew=150)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8117b8e89b9aa4ed51fbaa8df8381c25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e142544a6d4e6851096afbd3cbad2fe2.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71e3f4f15b5fbde99213c2e730a97895.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b35fd731931c42b2d17bb8d3f9109bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
您最近一年使用:0次