Triangle C C\,C has vertices at (1,2)(1, 2)(1,2), (1,4)(1, 4)(1,4), and (4,2)(4, 2)(4,2).
Triangle D D\,D has vertices at (−2,1)(-2, 1)(−2,1), (−4,1)(-4, 1)(−4,1), and (−2,4)(-2, 4)(−2,4).
Describe fully the single transformation that maps triangle C C\,C onto triangle DDD.