如图,△ABC的面积为1,BD=½DC,AF=½FD,CE=½EF,求DEF的面积.class="ikqb_img" src="http://h.hiphotos.baidu.com/zhidao/wh%3D600%2C800/sign=46c4ea2db7fd5266a77e34129b28bb13/e1fe9925bc315c60f3a78d298cb1cb13485477c2.jpg" esrc="htt
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/08 22:22:30
xn0 WAEʼn $:;~> w 5,EH$?jU !4
āэ]x4i44v)I?nwѱ*)ŇDWVUvnPtX1|>oQ5Ne^+}LZWkŃAzX4ʃ$u N+4m[@mx
`q/2e\7{qCC7CK#!g DPJ-.e sajK( Ƕy4#a= .9Ch m}' A}EO>e9:.v|flG.N'dXfm?VO*Wr ϯ$TmCiB
J ;O%ڡ
"zRvPV[]Z*ŏW!BèƹDJ_doOCb\IۙHB*
vAeSb:K