I guess it is simplifying the expression:

Answer: <span>rotation and dilation.
While rotation only rotates (obviously) the figure, dilation preserves the shape of the figure (that is, preserves the angles) but changes the distances: it makes the figure smaller.
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The other 2 sequences of transformations only change the position of the figure, but the angles and distances remain intact.
Answer:
el aumento es debido a los icebergs derritiendose
losiento por mi español