已知:如图9,在△ABC中,AD平分∠BAC,DC⊥AC,AD=BD.求证AB=2AC
如图,已知在△ABC中,AD平分∠BAC,求证DB/DC=AB/AC
已知如图△ABC中AD平分∠BAC,E在BD上,且DE=DC,EF‖AB,求证EF=AC
一道几何题,已知,如图,在△ABC中,AD平分∠BAC,BD⊥AD于点D,DC‖AB.求证:AC=1/2AB
如图所示,在△ABC中,AD平分∠BAC,CD⊥AC,AD=BD.求证:AB=2AC.
如图,在△ABC中,AB=2AC,AD平分∠BAC,且AD=BD,求证:CD⊥AC.
如图,△ABC中,AB>AC,AD平分∠BAC,求证:AB-AC>BD-DC
已知三角形ABC中,AB=2AC,AD平分∠BAC,且AD=BD,求证:CD⊥AC.
已知如图,△ABC中,AD是∠BAC的平分线,求证:BD:DC=AB:AC.
△ABC中,AB>AC,AD平分∠BAC,求证:AB-AC>BD-DC
如图,△ABC中,AB=2AC,AD平分∠BAC,且AD=BD,求证:CD⊥AC
如图,△ABC中,AB=2AC,AD平分∠BAC,且AD=BD,求证CD⊥AC
如图,在△ABC中,AD是∠BAC的平分线,求证:BD:DC=AB:AC