In the net of a rectangular pyramid, there are two sets of congruent faces. The pyramid consists of a rectangular base and four triangular lateral faces.
- The base has one rectangular face.
- The four triangular faces are congruent in pairs if the pyramid is a right rectangular pyramid (where the apex is directly above the center of the base).
Thus, summarizing the faces:
- 1 rectangular face (base)
- 2 pairs of congruent triangular faces
Overall, there are 2 sets of congruent faces: one pair of triangles and the singular rectangular base.