已知a,b,c是△ABC的三边长,且
a2+b2+c2-6a-8b-10c+50=0.
求:(1)a,b,c的值.
(2)判断△ABC的形状.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45bcd8f6ede8cc2513ad41402f40086.png)
求:(1)a,b,c的值.
(2)判断△ABC的形状.
19-20九年级上·黑龙江佳木斯·阶段练习 查看更多[3]
黑龙江省佳木斯市富锦市第四中学2019年九年级上学期10月月考数学试题(已下线)专题06 一元二次方程及其解法(二)-配方法-2021-2022学年九年级数学上册链接教材精准变式练(北师大版)(已下线)21.2.1 一元二次方程的解法-配方法(讲义+习题)-2022-2023学年九年级数学上册同步精讲精练(人教版)
更新时间:2019-10-23 15:15:49
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【知识点】 利用勾股定理的逆定理求解解读
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【推荐1】如图,已知
,
,
,
,
,求该图形的面积.(提示:连接
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d92d5d2adfe12d5edd03e038c0b4e3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aab23e685a7c44c1d10ab1d6e3e44ee1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cd6ba8ca29e0f3402904f0cc956d494.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f945a0b43e15aaeb4b36ef7aa46f88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/8/add79584-7d81-45fe-9ccd-a672bf705713.png?resizew=159)
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解答题-计算题
|
适中
(0.65)
【推荐2】如图,
,
,
,
,
,请你连结
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/8/d03cd4fa-17ad-4666-8fc1-acf06c20adfb.png?resizew=156)
(1)计算
的长;
(2)判断
的形状并说明理由;
(3)计算四边形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00948a72b7c367ccda6badc2f7ff22fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18b5e7ad8fde2001e99ae54838adb9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/8/d03cd4fa-17ad-4666-8fc1-acf06c20adfb.png?resizew=156)
(1)计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
(3)计算四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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