10 points! ! polygons abcd and a′b′c′d′ are shown on the following coordinate grid: what set of transformations is performed on abcd to form a′b′c′d′? a 90 degrees counterclockwise rotation about the origin followed by a translation 1 unit to the left b translation 1 unit to the left, followed by a 90 degrees counterclockwise rotation about the origin c 270 degrees counterclockwise rotation about the origin followed by a translation 1 unit to the left d translation 1 unit to the left followed by a 270 degrees counterclockwise rotation about the origin