12.
在?ABCD中,E、F分别在BC、AD上,若想要使四边形AFCE为平行四边形,需添加一个条件,这个条件不可以是( )
0 284761 284769 284775 284779 284785 284787 284791 284797 284799 284805 284811 284815 284817 284821 284827 284829 284835 284839 284841 284845 284847 284851 284853 284855 284856 284857 284859 284860 284861 284863 284865 284869 284871 284875 284877 284881 284887 284889 284895 284899 284901 284905 284911 284917 284919 284925 284929 284931 284937 284941 284947 284955 366461
| A. | AF=CE | B. | AE=CF | C. | ∠BAE=∠FCD | D. | ∠BEA=∠FCE |