The minimum number of rigid transformations required to show that polygon ABCDE is congruent to polygon FGHIJ is 1 2 3 4 . A rotation reflection dilation translation must be used to make the two polygons coincide. A sequence of transformations of polygon ABCDE such that ABCDE does not coincide with polygon FGHIJ is a reflection across the x-axis and a 90° clockwise rotation about point D a translation 2 units down and a 90° counterclockwise rotation about point D a 90° counterclockwise rotation about point D and a reflection across the x-axis a reflection across the x-axis and a 90° counterclockwise rotation about point D