如图,在梯形ABCD中,AB∥CD,AC⊥BD于点O,∠CDB=∠CAB,DE⊥AB,CF⊥AB,E、F为垂足,设DC=m,AB=n.(1)求证:△ACB全等于△BDA.(2)求四边形DEFC的周长
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/11 15:27:08
xWYOG+K@{a7b,t6?!ڃp8kw1f#1 f셑S=Ďyɫz몯FН<-sѕ]mmJ2&jy%mL\ޖZuQXD .IqﳹZyt2,.q֎a|e:Ofx3-w`B1/?=ϿǕ[4aֈ#ɱ1?[h^Z5p]1w*9ɝ20Ix~ =^m?{bϷ/Da
Rސ/՛Pד
|/ao&&C`Dz37FJgq &G"_$NP۟6pL..蝾Wb^Znn¤=V8^_֧hq W($Cq6Uk8&1D9g"&B4& 8Wf
Bczmgtw:[{? 36nƪϴCV7-9 iqpH*o$-%pkYßο#0LaɁH0% ^2z1
-t?kxQOԳ:YV4$|fIN/4Ls 4W2IӅO !f$p2oAH\T[|F@t&
PQ˪ `
(B[>P/3?,Yc%==f? }WB֢@~OO)-ؾv
{c|/z?X':Ӓi!6mi[Tn[uw]f Ʉ
K6"AEiTkFvF¢L8Y?ԲU9#ING۶Ffĕ\L͘J aMB2'aiqjuKie@Cيh%PRt&)0+8&f[c*'LKڶ#QƀON:;cZ1qdZZ`qi1(;ONJevxۛo!<~$Y )]u5-ֲӵ=8A'Jf9&-"Tyݼ/g"K1P