Question

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`​

Answer 1

$\huge\bf\underline{To \:Find:-}$

• we have to find A'

❥$\huge\bf\underline{Answer:-}$

A' is the set of all equilateral triangles.

≫ Explanation:-

It is given that U is a set of all triangles in plane. means U is a set of all type of Triangle like equilateral, isosceles, sceles and so on.

After that ,

A is a set of all triangles with at least one angle different from 60° .

It means that A is a set of all Triangles but one angle is different and not of the measure of 60° .In Equilateral triangle all angles are of 60°.

━━━━━━━━━━━━━━━━━━━━━━━━━