配套习题- 利用正方形的对称性解决问题 -【青果学院】

1/5单选题

难度：

1.如图所示，正方形ABCD中，点E是CD边上一点，连接AE，交对角线BD于点F，连接CF，则图中全等三角形共有（　　）

A	1对
B	2对
C	3对
D	4对

正确答案：Qw==

6Kej77ya4oi1QUQ9Q0TvvIziiKBBREI94oigQ0RCPTQ1wrDvvIxERj1ERu+8mzxicj7iiLTilrNBREbiiYzilrNDREbvvJs8YnI+5ZCM55CG5Y+v5b6X77ya4pazQUJG4omM4pazQ0JG77ybPGJyPuKItUFEPUNE77yMQUI9QkPvvIxCRD1CRDxicj7iiLTilrNBQkTiiYzilrNDQkQuIDxicj7lm6DmraTmnKzpopjlhbHmnIkz5a+55YWo562J5LiJ6KeS5b2i77yMPGJyPuaVhemAiUMuIA==

2/5单选题

难度：

2.如图，正方形的网格中，∠1+∠2+∠3十∠4+∠5等于（　　）

A	175°
B	180°
C	210°
D	225°

正确答案：RA==

6Kej77ya4oi14oigMeWSjOKIoDXmiYDlnKjnmoTkuInop5LlvaLlhajnrYnvvIw8YnI+4oi04oigMSviiKA1PTkwwrDvvIw8YnI+4oi14oigMuWSjOKIoDTmiYDlnKjnmoTkuInop5LlvaLlhajnrYnvvIw8YnI+4oi04oigMiviiKA0PTkwwrDvvIw8YnI+6ICM77ya4oigMz00NcKw77yMPGJyPuKItOKIoDEr4oigMiviiKAz5Y2B4oigNCviiKA1PTIyNcKwLiA8YnI+5pWF6YCJRC4g

3/5单选题

难度：

3.如图，正方形ABCD的边长为4，点M在边DC上，且DM=1，N为对角线AC上任意一点，则DN+MN的最小值为（　　）

A	3
B	5
C	6
D	无法确定

正确答案：Qg==

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

4/5单选题

难度：

4.已知：如图，AC为正方形ABCD的对角线，E为AC上一点，连接EB，ED，当∠BED=126°时，∠EDA的度数为（　　）

A	54°
B	27°
C	36°
D	18°

正确答案：RA==

6Kej77ya4oi1QUJDROaYr+ato+aWueW9ou+8jDxicj7iiLTiiKBEQUM9NDXCsO+8jDxicj7iiLXiiKBCRUQ9MTI2wrDvvIw8YnI+4oi04oigREVDPTYzwrDvvIw8YnI+4oi04oigRURBPTE4wrAuIDxicj7mlYXpgIlELiA=

5/5单选题

难度：

5.如图，正方形ABCD的边长为4，E是BC边的中点，P是对角线BD上一个动点，则PE+PC的最小值是（　　）

A	2
B	2+2
C	4
D	6

正确答案：QQ==

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