Question

如图,在平行四边形ABCD中,AE平分∠BAC,交BC于E,BE：EC＝3：2,CD＝6cm,求EC的长和平行四边形AB

Answer 1

AE平分∠BAC?

AE平分∠BAD吧?

AE平分∠BAD,∠BAE=∠EAD;

∠AEB=∠EAD,[内错角]

∠BAE=∠AEB;

BE=BA=CD=6cm;

BE：EC＝3：2,

EC=2BE/3=2*6/3=4cm;