>regular triangle, we call equilateral triangles regular polygons.
>isosceles, as an equilaterial triangle is a specific type of isosceles due to more than one side being of equal length and angle.
>equilateral, where all sides and angles are the same.
>acute, as all 3 angles are less than 90
>equiangular. equilateral triangles are also described as equiangular.