What universal sets would you propose for each of the following:
1. The set of right triangle.
2. The set of isosceles triangle.
For both 1 and 2 the universal set would be:
The set of all triangles.
You can refer this- https://www.teachoo.com/2021/569/Ex-1.3--8---What-universal-set(s)-would-you-propose-for/category/Ex-1.3/