Whatuniversal set (s) would you propose for each of the following:
(i) Theset of right triangles
(ii) Theset of isosceles triangles
(i) Forthe set of right triangles, the universal set can be the set oftriangles or the set of polygons.
(ii) Forthe set of isosceles triangles, the universal set can be the set oftriangles or the set of polygons or the set of two-dimensionalfigures.