The first step to determine that the rectangle in quadrant lll is congruent to the rectangle in quadrant I was rotated to the first rectangle 90 degrees clockwise about the origin what's the next step
The next step is to determine the position of the vertices of the rotated rectangle. This can be done by using the coordinates of the vertices of the original rectangle and applying the clockwise rotation formula around the origin.
The formula to rotate a point (x, y) 90 degrees clockwise about the origin is:
x' = y
y' = -x
Apply this formula to each vertex of the original rectangle to find the coordinates of the corresponding vertices of the rotated rectangle.