枞下
@HcKfad
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Joined January 1970
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枞下@HcKfad
2024.09.21 16:22
设abcdef点，df垂直于ab，连接cd，可知cd=5，af=cd=5，df=3，由df，db可知bf=4，ab=af+bf=4+5=9，求求你们🥺🥺🥺孩子要哭了到底哪儿错了
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