Question

the set of triangles on a plane is an example ​

Answer 1

Answer:

Let U be the set of all triangles in a plane. If A is set of all triangles with at least one angle different from 60°, what is A'. = Set of equilateral triangles. Hence, A' = Set of all equlateral triangles.

Answer 2

Answer:

hey mate here is Ur answer

Step-by-step explanation:

Let U be the set of all triangles in a plane. If A is set of all triangles with at least one angle different from 60°, what is A'. = Set of equilateral triangles. Hence, A' = Set of all equlateral triangles.

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