如图,已知AE=AC,AD=AB,∠EAC=∠DAB.求证:△EAD≌△CAB.

问题描述:

如图,已知AE=AC,AD=AB,∠EAC=∠DAB.求证:△EAD≌△CAB.

证明:∵∠EAC=∠DAB,
∴∠EAC+∠CAD=∠DAB+∠CAD,
∴∠EAD=∠CAB,
又∵AE=AC,AD=AB,
∴△EAD≌△CAB.