AB‖CD,E是AC上一点,BE的延长线交DC的延长线于F点.,∠1=∠B,∠2=∠D. (1)求证BE⊥ED.(2)当=3时,求DF的长
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/19 00:15:34
![AB‖CD,E是AC上一点,BE的延长线交DC的延长线于F点.,∠1=∠B,∠2=∠D. (1)求证BE⊥ED.(2)当=3时,求DF的长](/uploads/image/z/13919004-36-4.jpg?t=AB%E2%80%96CD%2CE%E6%98%AFAC%E4%B8%8A%E4%B8%80%E7%82%B9%2CBE%E7%9A%84%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%BA%A4DC%E7%9A%84%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%BA%8EF%E7%82%B9.%2C%E2%88%A01%3D%E2%88%A0B%2C%E2%88%A02%3D%E2%88%A0D.+%281%29%E6%B1%82%E8%AF%81BE%E2%8A%A5ED.%282%29%E5%BD%93%3D3%E6%97%B6%2C%E6%B1%82DF%E7%9A%84%E9%95%BF)
xS]O@+v:oLˮ
[)'$`֍bA LY$lڂOK}㡓s=j<9U.|v܊N9ivTjRIz:V|UU-hVPqs,wԼn{s*gǟl9+,T
{OV3#9O{EDţ#ɜGC]ꍸޜo&Z&3zC>]
r zҘDȔ$b@,DPnEaS2`PuphI## CB ՞ƊJ8b\h&68 fX Aژ_|Reʟ
ՕmnCũ㸽l_OyJ^/}l]M0$+jpZA%LB/ȶԌRN;οf_e*:+R܂ӄz]̥^ԫTkP"Edk:n]oJu