如图,AB=AC,∠BAC=120°,AD⊥AB,AE⊥AC.
已知:如图,在△ABC中,AB=AC,∠BAC=120°,点D,E在BC上,AD⊥AB,AE⊥AC
如图,三角形ABC中AB=AC,∠BAC=120度,AD⊥AB于A,AE⊥AC于A
如图,AB=AC,AD=AE,∠BAC=∠DAE=90°
如图,△ABC中,AB=AC,AD、AE分别是∠BAC和∠BAC的外角的平分线,BE⊥AE.
1.如图,三角形ABC中,AB=AC,AD、AE分别是∠BAC和∠BAC外角的平分线,BE⊥AE
已知,如图AB=AC,AD=AE,∠BAC=∠DAE
如图,AD⊥AE,AB垂直AC,AD=AE,AB=AC,AD⊥AE ,AB=AC,求证:三角形ABD≌三角形ACE
如图,在△ABC中,AB=AC,∠BAC=120°,D是BC的中点,DE⊥AC,则AE:EC=______.
如图,AB⊥AC,AD⊥AE,AB=AC,AD=AE.求证BE⊥CD
已知,如图,△ABC中,AB=AC,∠BAC=120°,AD⊥BC,DE⊥AB,垂足分别为D,E.求证:BE=3AE.
已知:如图,AD=AE,AB=AC,∠DAE=∠BAC.求证:BD=CE.
如图,AB=AC,AD=AE,BD、CE交于O,求证:AO平分∠BAC.