Line segment AB has a length of 3 units. It is translated 2 units to the right on a coordinate plane to obtain line segment A′B′. What is the length of A′B′?
A translation is a movement of a point or line to another spot on a plane. A translation of a line only moves the line, and nothing else. The length doesn't change.
A translation only moves a line, line-segment, or shape, and does not affect the measurement in any way. the length will still stay the same for Line segment AB.