Line segment ab is shown on a coordinate grid: a coordinate grid is shown from positive 6 to negative 6 on the x-axis and from positive 6 to negative 6 on the y-axis. a line segment ab is shown with a as ordered pair 1, 3 and b as ordered pair 5, 3. the line segment is rotated 270 degrees counterclockwise about the origin to form a'b'. which statement describes a'b'? a'b' is parallel to ab. a'b' is half the length of ab. a'b' and ab are equal in length. a'b' is greater than twice the length of ab.