Polygon abcd goes through a sequence of rigid transformations to form polygon a′b′c′d′. the sequence of transformations involved is a reflection across the , followed by a reflection across the line

Step-by-step explanation:

The polygon ABCD showed in the image attached is first reflected across the y = x line, from the second quadrant to the fourth quadrant. This reflection will result like the second image.

Then, it's reflect across the y-axis, which in terms of lines would be x = 0 line. This reflection will be like the last position showed in the first image, it's a common reflection with y-axis as a mirror.

a

step-by-step explanation: