The Scale factor is 2.
A dilation in mathematics is a function f from a metric space M into itself that, for any locations x, y in M, fulfills the identity d=rd, where d is the distance between x and y and r is some positive real number. Such a dilatation is a resemblance to the space in Euclidean space.
Given
in pre -- image sides are 4, 5, 3
in the image, the sides are 4(2), 5(2), 3(2)
The scale factor is 2.
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