No a scale factor of 1 is not a dilation because, in a dilation it must remain the same shape, which it would, but the size must either enlarge or shrink.
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Center and Scale Factor....
The scale factor is the ratio of any side of the image and the corresponding side of the original figure.
A scale factor of one means that there is no change in size.
It is (2.5x, 2.5y) where P =(x,y).
It is (2.5x, 2.5y) where P =(x,y).