arrange this points in increasing order of the slope (15,30)and(20,40) (12,32)and(18,48) (27,12)and(72,32) (45,15)and(60,20)
(27,2)and(243,18)
(18,63)and(24,84)
(63,9)and(84,12)
(27,2)and(243,18)
(18,63)and(24,84)
(63,9)and(84,12)