The rule (x, y)→(2x,2y) maps △def to △d′e′f′. which statement correctly describes the relationship between △def and △d′e′f′ ? the triangles are congruent because △d′e′f′ is a rotation of △def , and a rotation is a rigid motion. the triangles are congruent because △d′e′f′ is a reflection of △def , and a reflection is a rigid motion. the triangles are not congruent because △d′e′f′ is a dilation of △def , and a dilation is not a rigid motion. the triangles are not congruent because △d′e′f′ is a translation of △def , and a translation is not a rigid motion.