如图,∩BAD=∩CAE=90°,AB=AD,AE=AC,AF⊥AC,垂足为F

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如图,∩BAD=∩CAE=90°,AB=AD,AE=AC,AF⊥AC,垂足为F
如图,△ABC中,∠BAD=90°,AB=AD,△ACE中,∠CAE=90°,AC=AE.

∠AFD=∠AFE.理由:过A作AM⊥DC于M,AN⊥BE于N.∵∠BAD=∠CAE=90°,∴∠BAD+∠BAC=∠CAE+∠BAC,即∠DAC=∠BAE;在△ABE和△ADC中,AB=AD(已知)

如图,AB=AC,AD=AE,DE=BC,且∠BAD=∠CAE 求证:四边形BCDE是矩形

【如图:根据提供的条件及求证四边形BCDE是矩形画的】证明:∵∠BAD=∠BAE+∠DAE   ∠CAE=∠CAD+∠DAE    

已知:如图,AB=AD,AC=AE,∠CAE=∠BAD.求证△EAD≌△CAB

因为∠CAE=∠BAD所以∠CAB=∠EAD因为AB=AD,∠CAB=∠EAD,AC=AE(边角边原则)所以△EAD≌△CAB

如图,在△ABC和△ADE中,∠BAD=∠CAE,∠ABC=∠ADE.

(1)△ABC∽△ADE,△ABD∽△ACE(2分)(2)①证△ABC∽△ADE,∵∠BAD=∠CAE,∠BAD+∠DAC=∠CAE+∠DAC,即∠BAC=∠DAE.(4分)又∵∠ABC=∠ADE,∴

如图,在三角形ABC和三角形ADE中,角BAD=角CAE,∠ABC=∠ADE

△ABD∽△ACE你已经证明△ABC∽△ADE那么得AB/AC=AD/AE∠BAD=∠CAE△ABD∽△ACE(边角边)

如图,AB平行AC,∠BAD=∠CAE,AD=AE,求证:△ABE≌△ACD.(SAS)

AB=AC证明:∵∠BAE=∠BAD+∠DAE,∠CAD=∠CAE+∠DAE,∠BAD=∠CAE∴∠BAE=∠CAD∵AD=AE,AB=AC∴△ABE≌△ACD(SAS)

如图,AB平行AC,∠BAD=∠CAE,AD=AE,求证:△ABE≌△ACD.

证明:∵∠BAE=∠BAD+∠DAE,∠CAD=∠CAE+∠DAE,∠BAD=∠CAE∴∠BAE=∠CAD∵AD=AE∴∠ADC=∠AEB∴△ABE≌△ACD(ASA)数学辅导团解答了你的提问,理解请

如图,三角形ABC全等三角形ADE求证角BAD=角CAE

因为全等三角形,所以角BAC=角DAE;所以角BAC-角DAC=角DAE-角DAC;即角BAD=角CAE再答:给好评啊

如图,已知AB=AD,AC=AE,角BAD=角CAE.试说明BC=DE

∵∠BAD=∠CAE∴∠BAD-∠CAD=∠CAE-∠CAD即∠BAC=∠DAE在△BAC和△DAE中{AB=AD{∠BAC=∠DAE{AC=AE∴△BAC≌△DAE(SAS)∴BC=DELZ的图有点

如图,在△ABC和△ADE中,∠BAD=∠CAE,∠ABC=∠ADE

相似因为∠BAD=∠CAE,所以∠BAC=∠DAE又因为∠ABC=∠ADE所以△ABC∽△ADE所以AD/AE=AB/AC在△ABD和△ACE中AD/AE=AB/AC,∠BAD=∠CAE所以△ABD∽

如图,已知△ABC≌△ADE,∠BAD=20°求∠CAE的度数

因为三角形全等,所以角bac等于角dae所以角bad等于角cae

如图,已知△abc≌△ade,∠bad=20°,求∠cae的度数.

20°因为△ABC≌△ADE,所以∠BAC=∠DAE∠BAD=∠BAC-∠DAC∠CAE=∠DAE-∠DAC=20

如图,在三角形ABD和三角形ACE中,角BAD=角CAE=90度,AD=AB,AC=AE,三角形ABE全等三角形ADC,

第一个应该是求证:△ABE≌△ACD1、证明∵∠BAD=∠CAE=90∴∠CAD=∠CAB+∠BAD=∠CAB+90,∠BAE=∠CAB+∠CAE=∠CAB+90∴∠CAD=∠BAE∵AB=AD,AC

已知:如图,AB/AD=BC/DE=AC/AE,求证:∠BAD=∠CAE

∵AB/AD=BC/DE=AC/AE,∴△ADE∽△ABC,∴∠BAC=∠DAE,∴∠BAC-∠DAC=∠DAE-∠DAC,∴∠BAD=∠CAE.

已知:如图,AB=AD,AC=AE,∠BAD=∠CAE,求证:BC=DE

利用相似三角形的性质做:证明:因为∠BAD=∠CAE,又因为,∠DAC=∠DAC,所以,∠BAD+∠DAC=∠CAE+∠DAC,即∠BAC=∠DAE,又根据题意知道:AB=AD,AC=AE,由相似三角

如下图所示,Rt三角形ABD中,AB=AD,角BAD=90度,Rt三角形ACE中,角CAE=90度,AC=AE.

∵∠BAD=∠CAE=90∴∠CAD=∠CAB+∠BAD=∠CAB+90,∠BAE=∠CAB+∠CAE=∠CAB+90∴∠CAD=∠BAE∵AB=AD,AC=AE∴△ABE全等于△ACD∴∠BEA=∠

如图,已知AB分之AE = BC分之ED = AC分之AD 证明∠BAD=∠CAE

楼主你好∵AB分之AE=BC分之ED=AC分之AD∴△ABC∽△ADE,∴∠BAC=∠DAE,∴∠BAD=∠CAE.满意请点击屏幕下方“选为满意回答”,谢谢.

如图在△ABE和△ACD中,已知∠B=∠C=90°,AD=AE,AB=AC,求证∠BAD=∠CAE如图,在△ABC中,A

第一题:因为∠B=∠C=90°,所以△ABE和△ACD都是直角三角形,又因为AD=AE,AB=AC所以△ABE全等于△ACD(HL定理)∠BAE=∠CAD(三角形全等,对应角相等)∠BAE-∠DAE=

如图,AB/AD=BC/DE=AC/AE,求证:∠BAD=∠CAE

因为AB/AD=BC/DE=AC/AE所以三角形ABC相似三角形ADE所以角BAC=角DAE又因为角BAC=角BAD+角DAC,角DAE=角CAE+角DAC所以角BAD=角CAE

1.如图,在△ABC和△ADE中,∠BAD=∠CAE,∠ABC=∠ADE.

(1)∵∠BAD=∠CAE,∠DAC=∠DAC.∴∠BAC=∠DAE,又∵∠ABC=∠ADE.∴△ABC∽△ADE,(AA)∴AB:AC=AD:AE°∵∠BAD=∠CAE∴△ABD∽ACE(SAS)(