如图,在
中,
,
是
边上的中线,延长
至点B,作
的角平分线
,过点C作
于点F.求证:四边形
是矩形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bbf9680f74a9ac5d934304654ce2771.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a23f35ebcd9799d82c1e41c09781a4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0e1e2a60c37ebc303d4fc2bf3d6a234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4cd68cc82e90a5e2049a7ea3171b84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd01ac7775fe40f1ab6616dce712bcee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5dfaa0f6208d4bf33106c7a9a54189b.png)
更新时间:2024-05-04 21:27:30
|
相似题推荐
解答题-证明题
|
较易
(0.85)
【推荐1】如图,在
中,
,
,点O在
上,以O为圆心,
为半程的半圆分别交
,
,
于点D,E,F,且
平分
.
是
的切线;
(2)若
半径为2,求图中阴影部分的面积(结果保留
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae7a3e520a16d4fdd73c4e6a4ce7be0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b28f28ced0531d1df34fcf04c6c67f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
您最近一年使用:0次
解答题-作图题
|
较易
(0.85)
名校
【推荐2】如图,在
中,
,以AB为直径的
交BC于点P,交CA的延长线于点D,连接BD.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/7/e361d958-9f96-41e9-ae84-6b3883f543c9.png?resizew=230)
(1)求作
的切线PQ,PQ交AC于点Q;(要求:尺规作图,不写作法,保留作图迹)
(2)在(1)的条件下,求证:
.
![](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/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/7/e361d958-9f96-41e9-ae84-6b3883f543c9.png?resizew=230)
(1)求作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)在(1)的条件下,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/182ba65ec136680500a4fccbaac583f2.png)
您最近一年使用:0次
解答题-证明题
|
较易
(0.85)
名校
【推荐1】如图,点A在
的边
上,
于
于
于C.
是矩形;
(2)若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27935c1ef4df2d52ac697678a3c8f39d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79016e5cebdaf32a36945bbfc404da02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07bf2d296921159374b59efaf1c224ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c12d8cb05167c7827c8e2a2314dae1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d88ebb7629aead99fac9066d665355d9.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
|
较易
(0.85)
【推荐2】如图,四边形
中,
,
相交于点O,O是
的中点,
.
![](https://img.xkw.com/dksih/QBM/2023/7/6/3275119516483584/3275716407173120/STEM/ae094e2da93b4b9b9183c7a7fa5f0fc5.png?resizew=145)
(1)请你添加一个条件(不另加辅助线)要使四边形
是矩形,还添加的一个条件是_________;
(2)求证:四边形
是矩形.
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://img.xkw.com/dksih/QBM/2023/7/6/3275119516483584/3275716407173120/STEM/ae094e2da93b4b9b9183c7a7fa5f0fc5.png?resizew=145)
(1)请你添加一个条件(不另加辅助线)要使四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次