挑战习题
1/5单选题
难度:

1.

如图,在四边形ABCD中,P是对角线BD的中点,E,F分别是AB,CD的中点,AD=BC,∠PEF=18°,则∠PFE的度数是 ( )度.



A

18°

B

36°

C

30°

D

45°

提示1:
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
提示2:
PHA+5qC55o2uQkM9QUTvvIzlj6/lvpfilrNQRUbkuLrnrYnohbDkuInop5LlvaLvvJs8L3A+
提示3:
PHA+5qC55o2u562J6IWw5LiJ6KeS5b2i55qE5oCn6LSo5Y+v5rGC4oigUEZF44CCPC9wPg==
正确答案:QQ==
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