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math question

来源：学生作业帮 编辑：作业帮 分类：数学作业 时间：2024/07/15 08:57:11
math question
都告诉你了,怎么不给分?
作DF,使DF平行于AC,连接AF
因为AC垂直于BD,且AC平行于DF
所以DF垂直于BD,AFDC为平行四边形
所以FB为10厘米
AD*BF=AC*BD
AD=CE
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