Answer:
see explanation
Step-by-step explanation:
The diagonals of a rectangle are congruent
The diagonals bisect each other.
Opposite sides are congruent, thus
PR = QS = 9
PQ = RS = 12
PS = 2 × PT = 2 × 7.5 = 15
QR = PS = 15
RT = 0.5 × QR = 0.5 × 15 = 7.5
