if square ABCD were Rotated 90 clockwise about the origin to create square A'B'C'D.
The measure of angle B is: D. 90.
Measure of angle
Given
ABCD=90 Clockwise
Hence:
Rotation will not change the size and figure
Square ABCD= Square A'B'C'D
mSo, mTherefore the correct option is D.