(a) Define the term “corresponding sides” with reference to two congruent triangles.
(b) In two triangles △PQR and △XYZ, it is given that PQ=XY, QR=YZ and RP=ZX. Name the three pairs of corresponding sides in an appropriate order.
(c) Explain whether △PQR and △XYZ are congruent on the basis of the information provided, and give one geometrical reason for your answer.