Triangle XYZ is translated down 4 units and to the left 8 units. The length of side XY is 10 units. What is the length of side X′Y′ ?(1 point)

The length of side XY is 10 units. When triangle XYZ is translated down 4 units, the new position of X will be at X'. Similarly, when triangle XYZ is translated to the left 8 units, the new position of Y will be at Y'.

Since the translation does not affect the length of the sides, the length of side XY (10 units) will be the same as the length of side X'Y'.

Therefore, the length of side X'Y' is also 10 units.