如图,在
中,
,
,
,
于点
,点
是
的中点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a71a9d21f77e9535de152bb33f802bb.png)
__________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd108abaf2b7fc1d0239b28afcf4ae6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037b342a682cbd4241855a243da3c016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a45b04cc3e5adaeff6f9e01e29032803.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a71a9d21f77e9535de152bb33f802bb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/7f1332a4-cf69-4905-a559-7db71f859003.png?resizew=185)
更新时间:2021-11-15 14:32:01
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【推荐1】如图,正方形ABCD的面积为1cm2,△AEF为等腰直角三角形,∠E=90°,AE和BC交于点G,AF和CD交于点H,则△CGH的周长_________
![](https://img.xkw.com/dksih/QBM/2019/7/11/2244614261465088/2246087577223168/STEM/953de5a7d1744306a6319a46e77ed67b.png?resizew=144)
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【推荐2】如图,
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;③
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【推荐1】如图,在
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,
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a7eb3a2c1708af75e441e9a84d051a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e3dfcd8aff269dd5aba398816490c6.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1d9218917d85a1dc19e60f076b8bfa.png)
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【推荐2】如图,四边形
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【推荐1】如图,已知在正方形
中,点
为对角线
的中点,过
点的射线
、
分别交
、
于点
、
,且
,
、
交于点
,则下面结论中:
①图形中全等的三角形只有三对;
②
是等腰直角三角形;
③正方形
的面积等于四边形
面积的4倍;
④
;
⑤
.
正确结论的是______ .
![](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)
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![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
①图形中全等的三角形只有三对;
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b14aeac55d519010de23642ac22cfb0b.png)
③正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0463da43878c8c9848d921ecf77f1ca5.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc5140e7757004328bd14af71095ea3.png)
⑤
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80e6291c379a485d9af8498985c9353b.png)
正确结论的是
![](https://img.xkw.com/dksih/QBM/2020/11/17/2594849542832128/2595421071900672/STEM/2d252ded1858466e83fc89b8afc5d39e.png?resizew=147)
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【推荐2】如图,已知正方形DEFG的顶点D、E在△ABC的边BC上,顶点G、F分别在边AB、AC上.如果BC=2,△ABC的面积是3,那么这个正方形的边长是_________ .
![](https://img.xkw.com/dksih/QBM/2018/12/14/2096715326128128/null/STEM/ace2dc60200a4fefb66688282ebd4804.png?resizew=132)
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