证明：∵⊿ACD和⊿BCE都是等边三角形∴AC=DC,BC=EC,∠ACD=∠BCE=60º∴∠ACD+∠ACB=∠BCE+∠ACB即∠DCB=∠ACE∴⊿DCB≌⊿ACE（SAS）∴BD=AE,S⊿DCB=S⊿ACE作CM⊥BD于M,CN⊥AE于N则S⊿DCB=½CM×BD,S⊿ACE=&#...