Equilateral triangle: Learn what an equilateral

Learn what an equilateral triangle is, how to identify it, and how to calculate its area and perimeter. Find formulas, examples, worksheets, and videos on equilateral triangle geometry. Learn what an equilateral triangle is, how to identify its shape, angles, area, perimeter and height. Find out the comparison, theorem and examples of equilateral triangles with other types of triangles. An equilateral triangle, also known as a triangle with equal sides , is a fundamental shape in geometry. Each of its sides is of equal length, and its interior angles are all 60 degrees, making it a 60-degree triangle. It is also a perfectly symmetrical shape. Properties An equilateral triangle is a triangle that has three equal sides. It is a special case of an isosceles triangle in the modern definition, stating that an isosceles triangle is defined at least as having two equal sides. [1]