如图,在
中,
垂直平分
,分别交
,
于点
、
,
垂直平分
,分别交
、
于点
、
,连接
,
.
,求
的周长.
(2)若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa29fe6cd9eb51c184f6299d437375cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e4cb4069a2e1e90d1a9c4979ad09ca2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65fc998d33cdf37c272f79cfd64b7b99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/654a3aacb8539b4996023caf5b55c85e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8b3ccbed8aa44da96fbf16bb9978b48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cd151c4fccf42e84b0bfa07b12227b3.png)
更新时间:2024-05-23 17:37:45
|
相似题推荐
解答题-证明题
|
适中
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【推荐1】如图,点C,B分别在直线MN,PQ上,点A在直线MN,PQ之间,MN∥PQ.
(1)如图1,求证:∠A=∠MCA+∠PBA;
(2)如图2,过点C作CD∥AB,点E在PQ上,∠ECM=∠ACD,求证:∠A=∠ECN;
(3)在(2)的条件下,如图3,过点B作PQ的垂线交CE于点F,∠ABF的平分线交AC于点G,若∠DCE=∠ACE,∠CFB=
∠CGB,求∠A的度数.
(1)如图1,求证:∠A=∠MCA+∠PBA;
(2)如图2,过点C作CD∥AB,点E在PQ上,∠ECM=∠ACD,求证:∠A=∠ECN;
(3)在(2)的条件下,如图3,过点B作PQ的垂线交CE于点F,∠ABF的平分线交AC于点G,若∠DCE=∠ACE,∠CFB=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
![](https://img.xkw.com/dksih/QBM/2021/12/30/2883658255941632/2885878057189376/STEM/47116287-c9da-4ef5-a2a9-bf54aa8c4bc2.png?resizew=574)
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解答题-证明题
|
适中
(0.65)
【推荐2】在
中,
是
的高,F是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/5/758b0089-3541-485a-aec9-3bda60f17bf1.png?resizew=163)
(1)求证∶
是等腰三角形;
(2)
,求
度数;
(3)
,求
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a08d81353a3ea431787f550b9d9b7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/5/758b0089-3541-485a-aec9-3bda60f17bf1.png?resizew=163)
(1)求证∶
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e67da1bf51e5f87750a63dc9e856ee87.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05d35d8d8bb0dc17f2f86fe5b230a2b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73f68e4414c9ab464bf433385c03705f.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa3f9acb1d11cd66ade022f4db1d15e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
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解答题-证明题
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适中
(0.65)
【推荐1】如图,在
中,
,
,
平分
交
于点F,
垂足是E,
的延长线与
交于点A.
;
(2)求证:
是
的中垂线;
(3)若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73636989e83905f8800a865c2b608c43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad63ab71efa010821650ffe08bd907f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b7513e09cccf40c3a483064b97e48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c42b59b76eafbbe36f13b2daa60132c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/133f14539e3090e18427017ff212d933.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe8bb808edb7f81fb3c14c8f3d7f0fad.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
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解答题-问答题
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【推荐2】
如图所示,作
的角平分线交
于点
,作线段
的垂直平分线分别交
于点
.若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86cae7cc6665dc8edfb9060075b3afb9.png)
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解答题-证明题
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【推荐1】如图,四边形ABCD是正方形,△EBC是等边三角形.
(1)求证:△ABE≌△DCE;
(2)求∠AED的度数.
(1)求证:△ABE≌△DCE;
(2)求∠AED的度数.
![](https://img.xkw.com/dksih/QBM/2019/5/17/2205464463777792/2206480693714944/STEM/2a09adb9a45a4c659f13c8b06473f14a.png?resizew=153)
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【推荐2】在△ABC中,AB=AC,点D为边BC上一点,且AD平分∠BAC,DE⊥AB于点E,DF⊥AC于点F.
(1)求证:BE=CF;
(2)若∠B=40°,求∠ADF的度数.
(1)求证:BE=CF;
(2)若∠B=40°,求∠ADF的度数.
![](https://img.xkw.com/dksih/QBM/2020/3/12/2417770795425792/2418021551906816/STEM/dd8e9c0cd42e4adc8115e70f94b13d2d.png?resizew=128)
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