Question

Line segment RS is shown on a coordinate grid:

The line segment is rotated 270 degrees counterclockwise about the origin to form R'S'. Which statement describes R'S'?

R'S' is parallel to RS.
R'S' is half the length of RS.
R'S' is twice the length of RS.
R'S' is equal in length to RS.

Answer 1

R'S' is equal in length to RS

Answer 2

D is correct.  A rotation is a rigid transformation so it keeps the length.