Question

Please help

Answer 1

square is expand with the scale factor of 0.5 so the line from the center of the square also increase with the same scale factor that is 0.5
so the new line from the center is 0.5 times greater than the PQ line that is also from the center but before dilated ...

Answer 2

have u got it ?

Answer 3

and for relation u can say that both are from the center of the square but new line is 0.5 times greater than the old center line that is PQ.