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如图所示,在△ABC中,AB=AC,在AB上取一点E,在AC延长线上取一点F,使BE=CF,EF交BC于G,求证EG=FG.
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教案备课库《七(1)年级数学作业2018年6月25日》真题及答案
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之间的关系描述正确是 ( )。 A.∠A>∠1>∠2
∠2>∠1>∠A
∠1>∠2>∠A
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如图在△ABC中AB=15AC=8在AC上取一点D使AD=3如果在AB上取一点E使△ADE和△AB
如图所示△ABC的外接圆圆心O.在AB上点D.是BC延长线上一点DM⊥AB于M.交AC于N.且AC=
如图所示在△ABC中AB=AC在AB边上取点D在AC的延长线上取点E使得BD=CE连接DE交BC于点
如图△ABC中∠BAC=90°AB=ACAD⊥BC垂足是D.AE平分∠BAD交BC于点E.在△ABC
如图△ABC中∠BAC=90°AB=ACAD⊥BC垂足是D.AE平分∠BAD交BC于点E.在△ABC
如图所示在△ABC中AB=AC在AB上取一点E.在AC延长线上取一点F.使BE=CFEF交BC于G.
如图所示△ABC中∠B.为直角P.是△ABC外一点且PA=PBPB⊥BC.若M.是PC的中点试确定A
如图在△ABC中BDCE是△ABC的高在BD上取一点P.使BP=AC在CE的延长线上取一点Q.使CQ
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如图所示在△ABC中AB=ACD是BC延长线上一点E是AB上任意一点DE交AC于F则
AE<AF
AE=AF
AE<AF或AE=AF
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如图在△ABC中AB=24AC=18D.是AC上一点AD=12在AB上取一点E.使
,D.,E.三点组成的三角形与△ABC相似,则AE的长为( )
A.16
14
6或14
16或9
如图所示在△ABC中∠C.=90°D.是AC上一点DE⊥AB于点E.若AB=10BC=6DE=2求四
如图△ABC中∠BAC=90°AB=ACAD⊥BC垂足是D.AE平分∠BAD交BC于点E.在△ABC
如图在△ABC中∠BAC=90°AB=ACAD⊥BC垂足是D.AE平分∠BAD交BC于点E.在△AB
如图所示在Rt△ACB中∠ACB=90°∠A=25°D.是AB上一点.将Rt△ABC沿CD折叠使B.
25°
30°
35°
40°
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