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
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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
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