First, we can see that this is a reduction because ΔXYZ is larger than its dilation, ΔX'Y'Z'.
But by how much? We can compare two sides such as XY and X'Y' to see.
-> I am going to compare sides XY and X'Y' because they are fully vertical lines that we can count without needing to use a distance formula.
-> XY is 8 units long
-> X'Y' is 4 units long
-> 8 / 4 is a scale factor of 2
Answer:
This is a reduction with a scale factor of 2.
