如图,AB=AC,AE平分∠DAC.求证:AE平行于BC
来源:学生作业帮助网 编辑:六六作业网 时间:2025/01/20 03:34:22
如图,AB=AC,AE平分∠DAC.求证:AE平行于BC如图,AB=AC,AE平分∠DAC.求证:AE平行于BC如图,AB=AC,AE平分∠DAC.求证:AE平行于BC证明:∵AB=AC,∴∠B=∠C
如图,AB=AC,AE平分∠DAC.求证:AE平行于BC
如图,AB=AC,AE平分∠DAC.求证:AE平行于BC
如图,AB=AC,AE平分∠DAC.求证:AE平行于BC
证明:∵AB=AC,
∴∠B=∠C,
∵AE平分∠DAC,
∴∠DAE=∠CAE,
又∵∠DAE+∠CAE=∠B+∠C,
∴2∠DAE=2∠B,即∠DAE=∠B,
∴AE∥BC.
因为AB=AC
所以∠B=∠C
根据外角定理:
∠DAC=∠B+∠C
因为AE平分∠DAC,所以∠EAC=1/2∠DAC
所以∠EAC=∠C
所以AE∥BC(内错角相等,两直线平行)
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,AB=AC,AE平分∠DAC.求证:AE平行于BC
如图,AB=AC,AE平分∠DAC.求证:AE平行于BC
如图,已知AE∥BC,AE平分∠DAC,求证:AB=AC
如图已知AE平行BC,AE平分角DAC,求证AB=AC
如图,已知AE平行于BC,AE平分角DAC,求证:AB=AC.
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?
已知:如图,AE平分角DAC,AE平行BC求证:AB=AC
已知:如图AE平行BC,AE平方∠DAC,求证:AB=AC
如图,已知AE∥BC,AE平分∠DAC,求证:AE∥BC.提示:∠DAE为∠1∠EAC为∠2上面打错了已知AE∥BC,AE平分∠DAC求证:AB=AC会的请回答
如图,B,A,D在一条直线上,AE平分∠DAC(1)若点P在AE上,求证:AB+AC
如图AB⊥AC,AD⊥AE,AB=AC,AD=AE.求证:△DAC≌三角形EAB
如图,在△ABC中,AB=AC,AE//BC,求证:AE平分∠FAC
如图12所示,已知AD=AC,AE平分∠DAC,B是AE上一点,连接BD,BC.求证:∠DBE=∠CBE.kj
如图,AB=AD,AC=AE,∠BAE=∠DAC.求证:∠C=∠E.
如图,AC=AB,AE=AD,∠EAB=∠DAC,求证:BD=CE
如图,已知AB=AD,AC=AE,∠BAE=∠DAC,求证,AH=AF