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The equilateral triangle , also called a regular triangle, is a triangle with all three sides equal. What are the other important properties of that specific regular shape? All three internal angles are congruent to each other, and all of them are equal to 60°. Learn how to calculate the area, perimeter, semi-perimeter, and altitude of an equilateral triangle using simple formulas. See solved examples and FAQs on equilateral triangles. What is an equilateral triangle in geometry – its definition, properties, picture, and types along with formulas for area and perimeter 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.
