Question

1- ​what universal set would you propose​ for each of the following :-
i-​ the set of right triangles
ii- the set of isosceles triangles
​​

Answer 1

Answer:

For the first part, a set of triangles will contain both right angle triangles and isosceles triangles. So, set of triangles will be the universal set. Universal set should contain A∪B∪C.