Group the given figures three classes using each figure only once.
1
(1, 3, 8), (2, 5, 9), (4, 7, 9)
2
(1, 3, 6), (2, 5, 9), (4, 7, 8)
3
(1, 5, 9), (2, 3, 6), (4, 7, 8)
4
(1, 3, 9), (2, 5, 6), (4, 7, 8)
Group the given figures three classes using each figure only once.