Equilateral triangle - Wikipedia
An equilateral triangle is a triangle with three sides of equal length and three equal angles. It is a regular polygon, occasionally known as the regular triangle. It is a special case of an isosceles triangle by modern definition. Its internal angle is 60 degrees or π /3 radians. Its perimeter is three times the side length. Its area is a quarter of the square root of three multiplied with ...

Equilateral Triangle: Definition, Properties, Formulas
What is an equilateral triangle in geometry – its definition, properties, picture, and types along with formulas for area and perimeter

Equilateral Triangle - Formula, Properties, Definition, Examples - Cuemath
Equilateral triangle is a triangle in which all sides are equal and angles are also equal. The value of each angle of an equilateral triangle is 60 degrees. Learn more about the equilateral triangle, properties, formulas along with solved examples.

Equilateral Triangle Calculator
The equilateral triangle calculator will help you with calculations of standard triangle parameters. Whether you are looking for the equilateral triangle area, its height, perimeter, circumradius, or inradius, this great tool is a safe bet.

Triangles - Equilateral, Isosceles and Scalene
A triangle has three sides and three angles. The three angles always add to 180°. There are three special names given to triangles that tell how...

Equilateral Triangle - GeeksforGeeks
An equilateral triangle is a type of triangle in which all three sides are equal in length and all three interior angles are equal. Since the sum of the interior angles of a triangle is 180°, each angle in an equilateral triangle measures 60°.

Equilateral Triangle -- from Wolfram MathWorld
An equilateral triangle is a triangle with all three sides of equal length a, corresponding to what could also be known as a "regular" triangle. An equilateral triangle is therefore a special case of an isosceles triangle having not just two, but all three sides equal. An equilateral triangle also has three equal 60 degrees angles. The altitude h of an equilateral triangle is h=asin60 degrees ...

Equilateral triangle - Math.net
ABC is an equilateral triangle since AB≅AC≅BC. An isosceles triangle has at least two equal sides, so an equilateral triangle is also an isosceles triangle. Angle measures An equilateral triangle is also called an equiangular triangle since its three angles are equal to 60°. In an isosceles triangle, the base angles are congruent.

Equilateral triangle - Simple English Wikipedia, the free encyclopedia
An equilateral triangle. It has equal sides (a = b = c), equal angles ( ), and equal altitudes (ha = hb = hc). Denoting the common length of the sides of the equilateral triangle as a, we can determine using the Pythagorean theorem that: The area is The perimeter is The radius of the circumscribed circle is The radius of the inscribed circle is or The geometric center of the triangle is the ...

Equilateral Triangle: Properties, Area Formula & 60° Angles
An equilateral triangle is a triangle in which all three sides have equal length. Because all sides are congruent, all three interior angles are also equal, eac