如题AB=AE,AC=AE,∠1=∠2.试说明;BC=DE.

如题AB=AE,AC=AE,∠1=∠2.试说明;BC=DE. 如图,已知AE∥BC,AE平分∠DAC,求证：AE∥BC.已知AE∥BC，AE平分∠DAC，求证：AB=AC 如图,在△ABC中,AB=AC,AE//BC,求证：AE平分∠FAC 如图,已知AB=AC,AE平分∠DAB,那么AE∥CB吗?为什么? 如图,AB=AC,AE平分∠DAC.求证:AE平行于BC 如图,已知AE平分∠DAC,AE平行BC,那么AB=AC吗? 如图,已知AB=AC,AE平分∠DAC,那么AE//BC吗? 如图,AB=AC,AE平分∠DAC.求证:AE平行于BC 已知:如图AE平行BC,AE平方∠DAC,求证:AB=AC 如图,D是三角形ABC的边AC上一点,∠CBD的平分线交AC于E,AE=AB,求证：AE×AE=AD×AC 已知：如图,在△ABC中,AD平分∠BAC,DE‖AC交AB于点E,求证：AE：AB+AE：AC=1 如图,DE//BC,请问AD:AC=AE:AB?AD:AE=AB:AC? 如图,在三角形ABC中,AB=AC,AE平行BC,求证,AE平分∠FAC. 如图,已知AB=AC,AD=AE,∠1=∠2.说明∠3=∠4. 如图,已知AB=AC,AD=AE,∠1=∠2.说明∠3=∠4 已知:如图,AB=AD,AC=AE,∠1=∠2.求证:△ABC≌△ADE. 已知,如图,ab=ad,ac=ae,∠1=∠2.求证:△abc≌△ade 已知,如图,AB=AC,AD=AE,∠1=∠2.求证：△ABD≌△ACE.