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)

units

The translation of the triangle down 4 units gives us a new vertex X' that is 4 units below X. Similarly, the translation of the triangle to the left 8 units gives us a new vertex Y' that is 8 units to the left of Y.

Since the length of side XY is 10 units, and the translation does not affect the length of the sides, the length of side X'Y' is also 10 units.

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