Group the given figures into three classes on the basis of their identical properties using each figure only once.
A1, 5, 7; 2, 4, 6; 3, 8, 9
B1, 5, 7; 2, 4, 8; 3, 6, 9
C1, 5, 7; 2, 3, 6; 4, 8, 9
D1, 5, 7; 2, 8, 9; 3, 4, 6
Group the given figures into three classes on the basis of their identical properties using each figure only once.
A1, 5, 7; 2, 4, 6; 3, 8, 9
B1, 5, 7; 2, 4, 8; 3, 6, 9
C1, 5, 7; 2, 3, 6; 4, 8, 9
D1, 5, 7; 2, 8, 9; 3, 4, 6