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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 degree, what is A' ? |
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Answer» U=set of all TRIANGLES in a PLANE. A=set of all triangles with at LEAST one angle different from the 60° therefore A'=set of all triangles with no angle different from 60° =set of all triangles with all THREE angles 60(as in an equilateral triangle all angles are 60°) =set of all equilateral triangles. hope it helps u dear friend. please mark me as brainliest. |
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