平行四边形ABCD,AC,BD交于E,∠AEB=45°,BD=2 将三角形ABC沿AC所在直线翻折到同一平面内,点B的落点为B'..平行四边形ABCD,AC,BD交于E,∠AEB=45°,BD=2 将三角形ABC沿AC所在直线翻折到同一平面内,点B的落点为

平行四边形ABCD,AC,BD交于E,∠AEB=45°,BD=2 将三角形ABC沿AC所在直线翻折到同一平面内,点B的落点为B'..平行四边形ABCD,AC,BD交于E,∠AEB=45°,BD=2 将三角形ABC沿AC所在直线翻折到同一平面内,点B的落点为
平行四边形ABCD,AC,BD交于E,∠AEB=45°,BD=2 将三角形ABC沿AC所在直线翻折到同一平面内,点B的落点为B'..
平行四边形ABCD,AC,BD交于E,∠AEB=45°,BD=2 将三角形ABC沿AC所在直线翻折到同一平面内,点B的落点为B',求DB’的长度.
如图

平行四边形ABCD,AC,BD交于E,∠AEB=45°,BD=2 将三角形ABC沿AC所在直线翻折到同一平面内,点B的落点为B'..平行四边形ABCD,AC,BD交于E,∠AEB=45°,BD=2 将三角形ABC沿AC所在直线翻折到同一平面内,点B的落点为
将三角形ABC翻折后,得三角形AB'C,连接B'E,得BE=B'E=1,∠BEB'=90°∠B'BD=45°=∠BB'E
因为∠B'ED=90° EB'=ED 所以∠EB'D=∠EDB'=45°所以B'D=√(1²+1²）=√2

根号2，连BB’得到DBB’是等腰直角三角形
有两个人给出同一答案，3L说题意不清，什么情况？？？

这题题意表达不清

Wholesale Dropship Companies - The way to Spot a Scam
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Drop Ship Wholesalers
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First of all, let's discuss the way to identify an actual wholesaler. ...

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Wholesale Dropship Companies - The way to Spot a Scam
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Drop Ship Wholesalers
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连接B'E 证明ABE全等AB'E (AB=AB’ ∠BAE=∠B'AE AE=AE) 所以∠B'EA=∠BEA=45° BE=B'E=1 ∠B'EB=∠B'EA+∠BEA=90° 在RT△B'ED中 根据勾股定理得：剩下不用说了 知道B'E=1 ED=1 B'D就=根号5

连接B'E 证明ABE全等AB'E (AB=AB’ ∠BAE=∠B'AE AE=AE) 所以∠B'EA=∠BEA=45° BE=B'E=1 ∠B'EB=∠B'EA+∠BEA=90° 在RT△B'ED中...

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连接B'E 证明ABE全等AB'E (AB=AB’ ∠BAE=∠B'AE AE=AE) 所以∠B'EA=∠BEA=45° BE=B'E=1 ∠B'EB=∠B'EA+∠BEA=90° 在RT△B'ED中 根据勾股定理得：剩下不用说了 知道B'E=1 ED=1 B'D就=根号2
刚刚说错 不好意思啊

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