如图,在
和
中,
,
,
.连接
,
相交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/4531c855-84b0-435e-a90f-59ed8421a64f.png?resizew=186)
(1)求证:
.
(2)求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e30e50e094cd2849e38859b36aad0b0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd51af05726da9bac82884fe7aa334f7.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/4531c855-84b0-435e-a90f-59ed8421a64f.png?resizew=186)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/024dc2ccbbe321774df5d44e8785b203.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0e1e2a60c37ebc303d4fc2bf3d6a234.png)
更新时间:2022-12-10 17:37:43
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】已知:在
中,
,点D在边
上,过点D作
于点E.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/3/f592e1aa-9b63-48ad-b2b5-251c81b1b377.png?resizew=431)
(1)如图1,求证:
;
(2)如图2,点F在
边上,连接
,使
,若
,求证:
;
(3)如图3,在(2)的条件下,过点D作
,交边
于G,点G是
中点,若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4354365ca0929f8a606ed0bf341e4ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bffd657e48b15b9b54a55817e2c26b22.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/3/f592e1aa-9b63-48ad-b2b5-251c81b1b377.png?resizew=431)
(1)如图1,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d68f2d6003a4bcd1b0b0307611970fa3.png)
(2)如图2,点F在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4564b2b86621ca3107bb43fc4b1a2bf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59e9be699a0363f126b18838eb9eb5f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4b14a2cb1a3be5b4244bdd7fd861051.png)
(3)如图3,在(2)的条件下,过点D作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7448de2b3f953e6fdf3d12da0ab454db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe5383ff62f7047721e61397694588a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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】尺规作图:如图,请在△ABC的BC边上找一点D,使得∠ADB=∠BAC.(不写画法,保留作图痕迹)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/13/09a9127b-9af4-47ca-90ae-df7f5131a138.png?resizew=256)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,在正方形
中,点
是
上的一点,点
是
延长线上的一点,且
,连接
、
、
.求证:
是等腰直角三角形.
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92034dd2bb9480b18709d01153467f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/24/1330f7a0-0cb3-4747-8c7e-d8ff96d409a6.png?resizew=209)
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AB是⊙O的直径,BC⊥AB,连接OC,弦AD∥OC,直线CD交BA的延长线于点E.
(1)求证:直线CD是⊙O的切线;
(2)若DE=2BC,EA=4,求⊙O的半径.
(1)求证:直线CD是⊙O的切线;
(2)若DE=2BC,EA=4,求⊙O的半径.
![](https://img.xkw.com/dksih/QBM/2020/9/24/2556781023666176/2558214710452224/STEM/b1d5f4672ab1449b87a1208e5e8d061c.png?resizew=207)
您最近一年使用:0次