Fie: cub ABCDA'B'C'D' , determinati:
<(AB,D'C') , <(AC,B'D') , <(AD',CC') , <(AC,BC') , <(DC,AC) , <(AD',BB') , <(AB,BB') , <(AB,D'B') , <(D'C',AB).
Va rooog amm nevoie urgeent!!!!!!!!!!
