如图,已知AB=AE,BC=ED,AC=AD,求证:BE平行CD
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如图,已知AB=AE,BC=ED,AC=AD,求证:BE平行CD如图,已知AB=AE,BC=ED,AC=AD,求证:BE平行CD如图,已知AB=AE,BC=ED,AC=AD,求证:BE平行CD用SSS
如图,已知AB=AE,BC=ED,AC=AD,求证:BE平行CD
如图,已知AB=AE,BC=ED,AC=AD,求证:BE平行CD
如图,已知AB=AE,BC=ED,AC=AD,求证:BE平行CD
用SSS证明△ABC≌△AED
则∠ABC=∠AED
∵∠AB=AE
∴∠ABE=∠AEB
∴∠CBE=∠CDE
∴四边形BCDE是等腰梯形
∴BE∥CD
已知:如图,AE⊥AB,BC⊥AB,AE=AB,ED=AC.求证:ED⊥AC.
已知:如图,AE⊥AB,BC⊥AB,AE=AB,ED=AC 求证:ED⊥AC
已知,如图,ae垂直ab,bc垂直ab,ae=ab,ed=ac 求证 ed垂直ac
如图,已知:AB=AE,AC=AD,AC⊥AD,AB⊥AE.求证:ED⊥BC.
如图,已知AB=AE,BC=ED,AC=AD,求证:BE平行CD
如图,已知AE=AD,AB=AC,求证ED⊥BC
如图,AE⊥AB,BC⊥AB,AE=AB,ED=AC,求证:ED⊥AC
已知,如图,AB⊥BC,AE⊥ED,AB=AE,
已知:如图,AB⊥BC,AE⊥ED,AB=AE,
已知:如图,AD=BC,AC=ED,AB=AE, 求证: 角ACD=角ADC
如图,已知AB分之AE = BC分之ED = AC分之AD 证明∠BAD=∠CAE
如图AB=AE,AC=AD,ED=BC,AE⊥AB 求证BC⊥DE
已知;如图,ae⊥ab,bc⊥ab,ae==ba,ed=ac.求证:△ead全等于△abc
如图:AB=AC,ED=EC,△ABC∽△EDC求证:AE//BC
如图,AB=AE.BC=ED.
如图,AB=AE.BC=ED.
如图,AE⊥AB,BC⊥AB,CD⊥ED,ED=DC.求证:AE+BC=AB.
已知:如图AE垂直AB,BC垂直AB,AE=AB,ED=AC,求证:ED垂直于AC因为AE⊥AB,BC⊥AB,所以角EAB=角B=90度.又因为AE=AB,ED=AC ,所以△AED全等于△ABC.所以∠CAB=∠E.又因为∠E+∠ADE=90°,所以∠CAB+∠ADE=90°,即ED⊥AC(