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

Answer:

A is set of equivalent triangles

Answer 2

Answer:

A is a set of all equilateral triangles

Step-by-step explanation:

U => set of all triangles in a plane.

A => set of all triangles with at least an angle different from 60 degree.

A' => set of all equilateral triangles

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