If R is the set of isosceles right angled triangles and I is set of isosceles triangles, then

a)R = I
b)
c)R ⊂ I
d)none of these

Kindly explain

2 answers

It would help if you would proofread your work before you post it.

What is b?

Isosceles right angled triangles would be included in set of Isosceles triangles.
b) R>I