题型:解答题-问答题
难度:0.65
引用次数:403
题号:13889351
如图,在△ABC中,点D是BC边上一点,连接AD,若AB=10,AC=17,BD=6,AD=8.
(1)求∠ADB的度数;
(2)求BC的长.
(1)求∠ADB的度数;
(2)求BC的长.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/4c0c9d2c-42b0-458e-b1e5-a8a69646822c.png?resizew=158)
更新时间:2021-09-08 16:37:14
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【知识点】 判断三边能否构成直角三角形解读
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解答题-证明题
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适中
(0.65)
【推荐1】如图,
中,
,垂足为
,
,
,
.
(1)求证:
;
(2)在
边上找一点P,连接
,若
是以
为腰的等腰三角形,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/26/d1c5fe2b-4f7c-4637-a3a8-d5f4b6ccd0f9.png?resizew=173)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
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解答题-问答题
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适中
(0.65)
【推荐2】判断由线段
、
、
组成的三角形是不是直角三角形:
(1)
,
,
;
(2)
,
,
;
(3)
,
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f34365e5040ce6944115c8da61bf110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a9373e657c34cc95867037738f53d65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dd4dfd596e8021e85ed3e39fd1d874c.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5834bc824c20d5e00909713d9bfc5c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/710e8341d060b3f7af2be47d0bd0fceb.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dd82b5223c2a708c1729db2a3750990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87bd9f5db8b97abf9bdd15b8efb6c64d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20db1bc4e364dd7c6afcab09a094b3e6.png)
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