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hasil rotasi ---- a' (-y , x)
----- a' [ - (-4), 2 ]
----- a' (4 , 2)
a' (4 , 2) selanjutnya dilatasi dgn pusat(0,0) dgn skala 3 adalah:
a" ( 4x 3 , 2x3) ----- a" (12, 6)