如图,在
中,
,点O在AB上,以点O为圆心,OA长为半径的圆与AC、AB分别交于点D、E,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/19/2200a400-b419-43b8-87ad-d994828428b2.png?resizew=214)
(1)判断直线BD与
的位置关系,并说明理由;
(2)若
,求BD的长.
![](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/940699bc6596266f000d99efff2954d4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/19/2200a400-b419-43b8-87ad-d994828428b2.png?resizew=214)
(1)判断直线BD与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dff40f20a0d8c97a519a66b806ce712.png)
更新时间:2023-01-18 16:01:11
|
【知识点】 图形的性质
相似题推荐
解答题-证明题
|
较易
(0.85)
名校
【推荐1】如图,在平行四边形
中,
为钝角,且
,
.
![](https://img.xkw.com/dksih/QBM/2022/8/27/3053788033212416/3056141334839296/STEM/d0b7026326934059880f74a8d62bd107.png?resizew=227)
(1)求证:
,
,
,
四点共圆.
(2)设线段
与(1)中的圆交于
,
.求证
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3f5dc11efe60b4fd9a13b1d6b83842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fbee06d305abf6692125513dc3757f9.png)
![](https://img.xkw.com/dksih/QBM/2022/8/27/3053788033212416/3056141334839296/STEM/d0b7026326934059880f74a8d62bd107.png?resizew=227)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(2)设线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea7cebe15ecef05559979b8060f0b33.png)
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解答题-作图题
|
较易
(0.85)
【推荐2】在正方形ABCD所在的平面内找一点P,使得
,
,
,
均为等腰三角形,求P的个数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c025ee3317be1099b7bf03a11e37ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac8fe4026f1a0745ab9aa9fe64f0e482.png)
您最近一年使用:0次