如图,已知:在
中,
,求
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff2d5592927500c2a4ccce58d2784ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c543c3ddc3723fde6bbfca3ea3b921b.png)
![](https://img.xkw.com/dksih/QBM/2018/8/21/2015264256139264/2048372270211072/STEM/f5b617efb9094bbd977692ae9e4357c9.png?resizew=112)
19-20八年级上·山东·课后作业 查看更多[1]
(已下线)2018-2019学年八年级上学期数学5.5 三角形内角和定理(2)
更新时间:2018-10-07 10:46:57
|
【知识点】 三角形内角和定理的应用解读
相似题推荐
解答题-问答题
|
较易
(0.85)
【推荐1】如图,在
中,
,
,
.
![](https://img.xkw.com/dksih/QBM/2023/1/4/3145432248590336/3146174469709824/STEM/3e5d8c83c75249db81166530fa2fd8dc.png?resizew=161)
(1)求
的度数;
(2)求
的度数.
![](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/0e53497af8899cb299d762f1a4f46a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14814fdc3ca8034bbd97cb76bed9c9d9.png)
![](https://img.xkw.com/dksih/QBM/2023/1/4/3145432248590336/3146174469709824/STEM/3e5d8c83c75249db81166530fa2fd8dc.png?resizew=161)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5157b42da58d55daad27d98b2fec15ff.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
您最近一年使用:0次
解答题-作图题
|
较易
(0.85)
【推荐2】如图,在
中,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/18/0afaa2d5-d554-4a92-b27a-34afb7566926.png?resizew=222)
(1)尺规作图:作
的垂直平分线交
于点
,交
于点
,连接
.(保留作图痕迹,不写作法,不写出结论)
(2)在(1)的条件下,若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/18/0afaa2d5-d554-4a92-b27a-34afb7566926.png?resizew=222)
(1)尺规作图:作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)在(1)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e19a24762d0c926dec6f464a31df6648.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
您最近一年使用:0次