如图,正方体ABCD-A'B'C'D'中,AE=A'E'.AF=A'F'.求证:EF╱╱E'F'且如图,正方体ABCD-A'B'C'D'中,AE=A'E'.AF=A'F'.求证:EF╱╱E'F'且EF=E'F'

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如图,正方体ABCD-A'B'C'D'中,AE=A'E'.AF=A'F'.求证:EF╱╱E'F'且如图,正方体ABCD-A'B'C'D'中,AE=A'E'.AF=A'F'.求证:EF╱╱E'F'且EF=E'F'
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如图,正方体ABCD-A'B'C'D'中,AE=A'E'.AF=A'F'.求证:EF╱╱E'F'且如图,正方体ABCD-A'B'C'D'中,AE=A'E'.AF=A'F'.求证:EF╱╱E'F'且EF=E'F'
如图,正方体ABCD-A'B'C'D'中,AE=A'E'.AF=A'F'.求证:EF╱╱E'F'且
如图,正方体ABCD-A'B'C'D'中,AE=A'E'.AF=A'F'.求证:EF╱╱E'F'且EF=E'F'

如图,正方体ABCD-A'B'C'D'中,AE=A'E'.AF=A'F'.求证:EF╱╱E'F'且如图,正方体ABCD-A'B'C'D'中,AE=A'E'.AF=A'F'.求证:EF╱╱E'F'且EF=E'F'