Answer:
The rules which could describe the rotation is, 90 degree counterclockwise.
Step-by-step explanation:
Given that:
Triangle XYZ with vertices X(0,0), Y(0, -2) and Z(-2, -2) is rotated to create the image triangle X'(0,0) , Y'(2, 0) and Z'(2, -2).
The rule of rotation of 90 degree counterclockwise:
Therefore, the rules which could describe the rotation is, 90 degree counterclockwise.