12.若正n边形的每个内角都等于150°,则n=( )
0 307886 307894 307900 307904 307910 307912 307916 307922 307924 307930 307936 307940 307942 307946 307952 307954 307960 307964 307966 307970 307972 307976 307978 307980 307981 307982 307984 307985 307986 307988 307990 307994 307996 308000 308002 308006 308012 308014 308020 308024 308026 308030 308036 308042 308044 308050 308054 308056 308062 308066 308072 308080 366461
| A. | 10 | B. | 11 | C. | 12 | D. | 13 |