如图,点C,D在
上,且
,
,
.求证:
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de966c316db1013defc56372fcf814e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8e290ca69736db986d2af2bf7f4b886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56ac348f4077765ae7e792c3991b95ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84dd882703ec95fa193cbfb1366caae0.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf7dc43a39738e3e2a0b819be505c6e.png)
23-24八年级上·山西朔州·阶段练习 查看更多[4]
山西省朔州市多校联考2023-2024学年八年级上学期第一次月考数学试题(已下线)第02讲 平行线的判定与性质(5类热点题型讲练)-【帮课堂】2023-2024学年八年级数学上册同步学与练(北师大版)河南省洛阳市偃师区偃师区实验中学2023-2024学年八年级上学期期中数学试题(已下线)第05讲 全等三角形与“SSS”判定三角形全等(4个知识点+6个考点)【暑假自学课】-2024年新八年级数学暑假提升精品讲义(人教版)
更新时间:2023-10-21 21:21:06
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相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图,
,
,
,求
的度数.请将解题过程填写完整.
![](https://img.xkw.com/dksih/QBM/2019/9/12/2289160378998784/2289185152466944/STEM/8c3880fb8ffd4129af169033b9725521.png?resizew=159)
解:
(已知)
__________( )
又
(已知)
( )
________________( )
_______________
( )
(已知)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd6020b78ff385667b30088ecadeadd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e53497af8899cb299d762f1a4f46a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9693da3141d4af5e8deb0fd17dd5aeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7d74465c34ad7afa5d39d9e300bdf86.png)
![](https://img.xkw.com/dksih/QBM/2019/9/12/2289160378998784/2289185152466944/STEM/8c3880fb8ffd4129af169033b9725521.png?resizew=159)
解:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aed77a4bd37990e39f3749ce168ec25f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8afc0b85f3e9abb7199710a79cdcfd1d.png)
又
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c08980b6afedc04aa04f385791f0163.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/758dc5363d5b601cd457da948795f951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c6e2c846b5362b06a10e54df6d9465.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e45f9222ea3ac2decc287e1244bec49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e519cdb0cac3981d8e9610dba507a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54c9bf0065293bcfedc38f12326f089a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50c7a4b16e51b256170c207a6501a73d.png)
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解答题-证明题
|
适中
(0.65)
【推荐2】如图所示,在
中,
是
平分线,
的垂直平分线分别交
延长线于点
.求证:
.
![](https://img.xkw.com/dksih/QBM/2019/9/5/2284058229661696/2284221791305728/STEM/1f940f6e6ba74f9bb5331596d33889bf.png?resizew=217)
证明:∵
平分![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
∴
(角平分线的定义)
∵
垂直平分![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
∴
(线段垂直平分线上的点到线段两个端点距离相等)
∴
( )
∴
(等量代换)
∴
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374fe9986ebbc986fc422e514ab93a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b92dbe7d01d47d6c2db1396180caf76d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4dd4faa9e59fa8e282ecec970d3d2cb.png)
![](https://img.xkw.com/dksih/QBM/2019/9/5/2284058229661696/2284221791305728/STEM/1f940f6e6ba74f9bb5331596d33889bf.png?resizew=217)
证明:∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/665ffcdb7c57534dc184cc840471f2f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f617fa80f09fc245909492f5335ea5c.png)
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235e30a411bcdfd22f29398b799a2116.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96164f94bd74e74108fedea38e6d8d13.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4dd4faa9e59fa8e282ecec970d3d2cb.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,AF=DB,BC=FE,AC=DE,求证: CB∥EF.
![](https://img.xkw.com/dksih/QBM/2018/11/17/2077575879475200/2084465274388481/STEM/20fd59b5252c425da2e4ea67a176b778.png?resizew=138)
您最近一年使用:0次
解答题-证明题
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适中
(0.65)
【推荐2】如图,以AB为直径的⊙O经过点C,CP为⊙O的切线,E是AB上一点,以C为圆心,CE长为半径作圆交CP于点F,连接AF,且AF=AE.求证:AB是⊙C的切线.
![](https://img.xkw.com/dksih/QBM/2022/1/3/2893745044324352/2951014932307968/STEM/a9579789-5f58-477a-bf4f-d1f2b1b80a89.png?resizew=201)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,在中,
,
是半径,
是劣弧
上的一点,且
.
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/997ac1051092089b358afbad3a3d6874.png)
您最近一年使用:0次