如图,直线a,b,c被直线l所截,若∠1=∠2,则______∥______;若∠2=∠3,则______∥______;若∠4=∠3
如图,直线a,b,c被直线l所截,若∠1=∠2,则______∥______;若∠2=∠3,则______∥______;若∠4=∠3,则______∥______....
如图,直线a,b,c被直线l所截,若∠1=∠2,则______∥______;若∠2=∠3,则______∥______;若∠4=∠3,则______∥______.
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