elizabethclair94 elizabethclair94 29-09-2022 Mathematics Answered Trapezoid RSTU was reflected over the y-axis and rotated 90° counterclockwise to create trapezoid R'S'T'U'. The vertices of trapezoid R'S'T'U' are R' (-5, -1), S' (-3,-4), T' (1,-4), and U' (3,-1).