What single transformation maps a(-3,1), b(-1,2), c(-2,1) to a(-1,-3), b(-2,-1), c(-1,-2)?

20y5 times 2 is 1010 times -2 is -20, plus y

You have 2 sides that are 2 cms and you have 6 sides that are 1/2 cm and you have 4 sides that are 1 cm. the smallest sides are 1/2 the medium sized sides are 1 and the smallest are 1/2. so to find the perimeter you have to add them all up together so your answer will be 11 cm's