关于平行线的问题,如图,已知直线CB//OA,∠C=∠OAB=100°,E、F在CB上,且满足∠FOB=∠AOBOE平分∠COF.图:(1)求∠EOB的度数.(2)若平行移动AB,那么∠OBC :∠OFC的值是否随之发生变化?若变化,找出变
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