如图,在正方形
中,E、F分别是
,
的中点,
,
交于点G,
,
的延长线交于点M,连接
,下列结论:①
;②
;③
;④
,其中正确的结论是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf857e03d4320c999d328fd657c2d412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/783b84ed8d927b77491092f7d2ee2989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4412d53360eca5a00f1d9925625ce86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/032a2b9d7d169436cdb842be77d2990b.png)
A.①② | B.①③ | C.①②③ | D.①②④ |
更新时间:2024-05-25 21:49:00
|
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【推荐1】下列命题中,是真命题的是( )
A.三角形的外角大于三角形的任何一个内角 |
B.线段的垂直平分线上的任一点与该线段两个端点能构成等腰三角形 |
C.三角形一边的两个端点到这边上的中线所在的直线的距离相等 |
D.面积都相等的两个三角形一定全等 |
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【推荐2】老师布置的作业中有这么一道题:
甲同学认为
,
,
这条三边不在同一个三角形中,无法解答,老师给的题目有错误.乙同学认为可以从中点
出发,构造辅助线,利用全等的知识解决.丙同学认为没必要借助全等三角形的知识,只需构造一个特殊四边形,就可以解决关于三位同学的思考过程,你认为正确的是…( )
如图,在![]() ![]() ![]() ![]() ![]() ![]() ![]() A.5 B.7 C.8 D.9 |
甲同学认为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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A.甲 | B.乙 | C.丙 | D.乙和丙 |
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【推荐1】如图,矩形
中,
为
的中点,过点
的直线分别与
,
交于点
,
,连接
交
于点
,连接
,
.若
,
,则下列结论:
![](https://img.xkw.com/dksih/QBM/2021/7/1/2754811145224192/2760578752856064/STEM/5049c7fa024a47ddb121bc8d7c1aec9b.png?resizew=131)
①
; ②
;
③四边形
是菱形; ④
.
其中正确结论的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f8fd68cf59f4ce7813122616644e38f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8753044648100f313ccb028336d2a55.png)
③四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8bdae3d30abf70515bdbd45f9d0c380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f74cdd687f26143b0833c2452c48d7bd.png)
其中正确结论的个数是( )
A.4 | B.3 | C.2 | D.1 |
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【推荐2】
是
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的度数为( )
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A.![]() | B.![]() | C.![]() ![]() | D.![]() ![]() |
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【推荐1】如图,已知正方形
,点
是
边的中点,
与
相交于点
,连接
,下列结论:
;
;
;
,其中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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【推荐2】如图,点
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;②
;③
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![](https://img.xkw.com/dksih/QBM/2019/5/5/2197119360196608/2197310359855104/STEM/a9874f6bbba64f01bb5f90fa5b1c4594.png?resizew=91)
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