Let U be the set of all triangles in a plane. If A is the set of all triangles with at least one angle different from `60^@`, what is A' ?

Let U be the set of all triangles in a plane. If A is the set of all triangles with atleast one angle different from 60^@ , what is A' ?

Let U be the set of all triangles in a plane. If A is the set of all triangles with atleast one angle different from 60^(@) , what is A'?

The set of right-angled triangles in a plane is :

In the set of all triangles "similarity is

Let U = set of all triangle and X = set of all triangles whose measure of all angle is less than 60^@ then X' = ……

Let A be the set of all triangles in a plane having the sum of three interior angles is greater than 180^(@) , then A is a/an ______ set.

Let U = the set of all triangles , P = the set of all isosceles triangles, Q - the set of all equilateral triangles , R = the set of all right angled triangles. What do the sets P uu Q represents ?

Can you have a triangle with all the angles equal to 60^@ ?

let mu = the set of all triangles, P = the set of all isosceles triangles, Q = the set of all equilateral triangles, R = the set of all right-angled triangles. What do the sets PnnQ and R-P represents respectively ?