Final answer:
The measure of XY in Triangle PQR is 4 units.
Step-by-step explanation:
To determine the measure of XY, we first need to find the length of PQ and QR. Using the distance formula, we calculate:
- PQ = √((-4-0)^2 + (0-0)^2) = √16 = 4
- QR = √((0-(-4))^2 + (2-0)^2) = √20 = 2√5
Since ΔPQR ≅ ΔXYZ, the corresponding sides are equal. So, XY is equal to the length of PQ, which is 4.