Answer:
The transformation that took place is:
horizontal stretch by a factor of 2
Explanation:
We are given that Polygon ABCD transformed to create polygon A'B'C'D'.
Clearly the polygon is first a translation of the polygon ABCD 1 units to the right and then it is horizontally stretched by a scale factor of 2.
since, the Length of the polygon was earlier 2 units and then the length of the Polygon A'B'C'D' are 4 units.
Hence, the transformation that took place in the Polygon ABCD is:
a horizontal stretch by a factor of 2