几何题超难如图http://bar.hexun.com/d/385643.html ;已知在△ABC中,AC=BC,CD⊥AB,垂足为D,E、G为CD上两点,且∠1=∠2=∠3,AF交CD于G,交BC于F,连接EF,则GB‖EF,请说明理由.B点处是∠1=∠2=∠3

来源：学生作业帮助网 编辑：作业帮 时间：2024/07/13 19:57:11
几何题超难如图http://bar.hexun.com/d/385643.html ;已知在△ABC中,AC=BC,CD⊥AB,垂足为D,E、G为CD上两点,且∠1=∠2=∠3,AF交CD于G,交BC于F,连接EF,则GB‖EF,请说明理由.B点处是∠1=∠2=∠3
xKNA:L4{fg5a &.ƠQD^Qb@(xV^jM͟`",ppZrJOedOM$%6&&>o<7IS.[Lta^"H V((="ma6#foBU!D%|f'ϐrl囔!i.tZN*Mp% ƒ ݳ?9jp?'KV`*˜m 3Sdiro *Q0ژJ# 42x )ͱҌRA)a)w_3Üޑ4ABWb>6of2цJbf)w~

几何题超难如图http://bar.hexun.com/d/385643.html ;已知在△ABC中,AC=BC,CD⊥AB,垂足为D,E、G为CD上两点,且∠1=∠2=∠3,AF交CD于G,交BC于F,连接EF,则GB‖EF,请说明理由.B点处是∠1=∠2=∠3
几何题超难
如图http://bar.hexun.com/d/385643.html ;已知在△ABC中,AC=BC,CD⊥AB,垂足为D,E、G为CD上两点,且∠1=∠2=∠3,AF交CD于G,交BC于F,连接EF,则GB‖EF,请说明理由.
B点处是∠1=∠2=∠3

几何题超难如图http://bar.hexun.com/d/385643.html ;已知在△ABC中,AC=BC,CD⊥AB,垂足为D,E、G为CD上两点,且∠1=∠2=∠3,AF交CD于G,交BC于F,连接EF,则GB‖EF,请说明理由.B点处是∠1=∠2=∠3
连结 AE
因为是等腰三角形,所以有：∠CAE=∠EAG=∠4=∠1
记AF和EB交点为O
则由 ∠EAO=∠1,∠EOA=∠FOB,知△AEO和△BFO相似
所以有：EO:AO=FO:BO
又有：∠EOF=∠AOB
得到 △EOF和△AOB相似
所以 ∠FEB=∠1=∠2
内错角相等,得GB‖EF

He is behind the bar 几何题超难如图http://bar.hexun.com/d/385643.html ;已知在△ABC中,AC=BC,CD⊥AB,垂足为D,E、G为CD上两点,且∠1=∠2=∠3,AF交CD于G,交BC于F,连接EF,则GB‖EF,请说明理由.B点处是∠1=∠2=∠3 Bar he learned forward across the bar翻译? 几何初中超难题已知如图http://bar.hexun.com/d/487216.html,等腰直角三角形ABC中,∠A＝90°,D为BC中点,E、F分别为AB、AC上的点,且满足EA＝CF．求证：DE＝DF． 英语翻译还能用 He has had a bar of chocolate he has a bar of chocolate.改为复数句 http: HTTP HTTP http: Mr.li's bar chart shows he sleeps ____8hours inMr.li's bar chart shows he sleeps ____8hours in the evening he has just had a chocolate bar.这句怎么两个have?这是什么结构? He heard a strange noise coming from the bar为什么come要加ing He heard a noise.The noise was coming from the bar.【改为定语从句】 Bob went drinking after work.He s_____ until the bar closed at three in the morning. How does he spend his time every week?The bar chart shows this.(改为宾语从句）the bar chart shows__________he_________his time every day 数学题求解!初中几何.题目 ：http://hi.baidu.com/hzahonglpy/album/item/7d566dead8abfdefd439c9e2.html