Area of Equilateral Triangle Formula, Derivation, and definition are discussed in detail in the article. Learn everything about Area of Equilateral Triangle . We need to find its area We know that, Area ∆ABC = 1/2 × Base × Height Finding base & height of equilateral triangle ABC Height is perpendicular from the vertex to the base. Let us draw perpendicular from point A Content- An equilateral triangle , as the name suggests, is a triangle where all sides are of equal lengths and each internal angle measures 60°. The area of such a triangle refers to the total space it occupies in a two-dimensional plane. If we know the length of its side, we can easily calculate the area . Learn the method for calculating the area of an equilateral triangle using the formula Area = (√3/4)s^2, where 's' denotes the side length of the equilateral triangle . Keep in mind that all sides of an equilateral triangle are of equal length.