 A shape that is rep-"n" or irrep-"n" is trivially also irrep-("kn" − "k" + "n") for any "k" > 1, by replacing the smallest tile in the rep-"n" dissection by "n" even smaller tiles.The order of a shape, whether using rep-tiles or irrep-tiles is the smallest possible number of tiles which will suffice.Every square, rectangle, parallelogram, rhombus, or triangle is rep-4.