In this question, you would like to know weather the polygons with their given vertices are congruent and would like for the answer to be supported by a description of a transformation. A (2,-1), B (3,0), C (2,3) and P (1,2), Q (0,3), E (-3, 2). The triangles can be labeled as congruent because you can map ABC to PRQ by a simple rotation : (x,y) --> (-y,x).
