如图所示,
为
的角平分线,
为
的高,若
,
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d3c9ce32b721995f355eea411340e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f8939f8c274cb26a8a6a5fa2469087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ed24d7acba0b3a7ebf4d520296424a3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/28/ba7f1a33-13f2-4650-b796-20138f0cae98.png?resizew=162)
23-24八年级上·安徽滁州·期末 查看更多[3]
安徽省滁州市天长市2023-2024学年八年级上学期期末数学试题安徽省滁州市全椒县2023-2024学年八年级上学期期末联考数学试题(已下线)易错04 三角形1(八大易错分析 避坑大招 学以致用 易错题通关)-备战2024年中考数学考试易错题(全国通用)
更新时间:2024-02-27 12:27:22
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解答题-作图题
|
适中
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名校
【推荐2】如图,反比例函数
的图象与一次函数
的图象交于点
、
两点.
![](https://img.xkw.com/dksih/QBM/2022/6/1/2991979474255872/2995038298267648/STEM/7672dd58-66bb-49b3-8c9a-cda3e012ab9e.png?resizew=261)
(1)求一次函数和反比例函数的解析式,并在平面直角坐标系中画出一次函数的图象;
(2)若点C(0,4),连接AC、BC,求△ABC的面积;
(3)根据图象、直接写出当
,时,自变量x的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5698fdca52f0b841d952897c6621a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09605c0d288f6a60aad099df0c4715c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9913222a42a73badfca3a93597234f82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51498008cd2b996a21759c7b22660382.png)
![](https://img.xkw.com/dksih/QBM/2022/6/1/2991979474255872/2995038298267648/STEM/7672dd58-66bb-49b3-8c9a-cda3e012ab9e.png?resizew=261)
(1)求一次函数和反比例函数的解析式,并在平面直角坐标系中画出一次函数的图象;
(2)若点C(0,4),连接AC、BC,求△ABC的面积;
(3)根据图象、直接写出当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421a7d6f54bf58a7a4f4ce61e06aefa9.png)
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解答题-问答题
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适中
(0.65)
【推荐1】如图,在
中,
分别是
的平分线,
分别是
的平分线.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/28/270cffc9-75e7-4cc9-b84b-fbafe0ac96f8.png?resizew=124)
(1)若
,则
,
,
;
(2)当
变化时,∠D+∠P的值是否变化?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dab67d1b4a722079cd03b7b0a0e89ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28ab822447b905b1fa91a6bf09c7f87f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ea08e74d2356073f3a22642956fdd4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1ba17ab84cee0de44c29f2d12bcdfc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/28/270cffc9-75e7-4cc9-b84b-fbafe0ac96f8.png?resizew=124)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3018c687427b6257767eda4a8c6612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b7960538cb70fcf641b94864a90190d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b6fede7d2da3ccecf3f9d32a10346c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da844b0393fc4f906979432c4c5c7fd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
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解答题-问答题
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适中
(0.65)
名校
【推荐2】如图,在
中,
,
于点
,
平分
交
于点
.
,交
于点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a11c83ececd3f2cc0fb77638df73be.png)
______ .
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/992a19339adac3a2f1aab1fbc11b1c68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a11c83ececd3f2cc0fb77638df73be.png)
![](https://img.xkw.com/dksih/QBM/2023/11/16/3369235995254784/3371375783813120/STEM/b6ea46c90a774c21ac10d8b1ce48de2d.png?resizew=165)
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解答题-问答题
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适中
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【推荐1】如图,在△ABC中,∠B=36°,∠C=76°,AD是△ABC的角平分线,BE是△ABD中AD边上的高,求∠ABE的度数.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/13/1f8ce015-629f-4b9f-90a1-d001b3b7881b.png?resizew=225)
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解答题-问答题
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适中
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【推荐2】如图,
中,点
在
上,分别以
、
为对称轴,作点
的对称点
、
,连接
、
.根据图中标示的角度,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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解答题-问答题
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适中
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【推荐1】如图,在△ABC中,CH是外角∠ACD的平分线,BH是∠ABC的平分线,∠A =58°,求∠H的度数.
![](https://img.xkw.com/dksih/QBM/2017/6/5/1702240501415936/1705334149365760/STEM/e571ebfc-66b9-4ebc-8ed1-61af0ecb399e.png)
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解答题-问答题
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适中
(0.65)
【推荐2】推理填空:
如图,
于D,
于C,
, 可得
平分
.
理由如下:
∵
于D,
于G( 已知 )
∴
( )
∴
( )
∴
( )
( )
又∵
( )
∴
___________( )
∴
平分
( )
如图,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f565a71cc98a3b496da9d09228617e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e0f86566770c9a240ebef8bd232cc9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
理由如下:
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c13ab7f17263c4e6163d960f1c5060.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a2b9fa58d9c24e6477c331661dcc82a.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2903ce0e8adb81c39907ca1d9e7fbdde.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e53497af8899cb299d762f1a4f46a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93e43ae351c7916dce6acf0fa9f048e8.png)
又∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e0f86566770c9a240ebef8bd232cc9f.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5324ce5fd43c5b05e8fad764880f7b3.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/7/d383b401-539e-47a0-9c2b-72d3bab553bb.png?resizew=207)
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