设∠AOB=X
∵∠AOB:∠BOC:∠COD:∠DOA=1:2:3:4,∠AOB=X
∴∠BOC=2X,∠COD=3X,∠DOA=4X
∵∠AOB+∠BOC+∠COD+∠DOA=360
∴X+2X+3X+4X=360
∴X=36
∴∠AOB=36,∠BOC=72,∠COD=108,∠DOA=144
设∠AOB=X
∵∠AOB:∠BOC:∠COD:∠DOA=1:2:3:4,∠AOB=X
∴∠BOC=2X,∠COD=3X,∠DOA=4X
∵∠AOB+∠BOC+∠COD+∠DOA=360
∴X+2X+3X+4X=360
∴X=36
∴∠AOB=36,∠BOC=72,∠COD=108,∠DOA=144