A triangle is a polygon formed by three line segments linked end-to-end. An equilateral triangle has all its three line segments equal. It is also said to be equiangular meaning that all its three internal angles are equal and congruent to each other.

**Formula to calculate the area of an equilateral triangle.**

**Example:**

Calculate the area of the following equilateral triangle.

Therefore, the area of the equilateral is 10.83 cmÂ² .