Line segment cd is shown on a coordinate grid: a coordinate plane is shown. line segment cd has endpoints 1 comma 2 and 1 comma negative 1. the line segment is rotated 90 degrees counterclockwise about the origin to form c'd'. which statement describes c'd'? a) c'd' and cd are equal in length. b) c'd' is parallel to cd. c) c'd' is half the length of cd. d) c'd' is greater than twice the length of cd.