(1)∵CF⊥AE,AC⊥BC
∴在△CEF中,∠ECF+∠CEF=90°,在△ACE中,∠CAE+∠CEA=90°∴∠FCE=∠CEA,AC=BC,∠ACB=∠CBD(ASA)
∴△ACE≌△DBC∴AE=DC
(2)AC=BC=12cm,BE=EC=6cm,∵△ACE≌△DBC∴BD=EC=6cm
(1)∵CF⊥AE,AC⊥BC
∴在△CEF中,∠ECF+∠CEF=90°,在△ACE中,∠CAE+∠CEA=90°∴∠FCE=∠CEA,AC=BC,∠ACB=∠CBD(ASA)
∴△ACE≌△DBC∴AE=DC
(2)AC=BC=12cm,BE=EC=6cm,∵△ACE≌△DBC∴BD=EC=6cm