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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' ?

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1 point
10 units
9 units
7 units
11 units

1 answer

Since Triangle XYZ is translated down 4 units and to the left 8 units, Triangle XYZ becomes Triangle X'Y'Z'.

Since the translation is only in the vertical and horizontal directions, the lengths of the sides of Triangle XYZ are preserved in Triangle X'Y'Z'. Therefore, the length of side X'Y' is also 10 units.

Therefore, the correct answer is 10 units.