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Answer:

An equilateral triangle may also be called a "regular" triangle. (A "regular" polygon has all equal sides and all equal angles.)An acute triangle has all angles measuring less than 90º. Note: It is possible for an acute triangle to also be scalene, isosceles, or equilateral.

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beepboopmoo
an acute triangle is a triangle with angles under 90 degrees! not sure what you mean by regular but i hope this definition helped