Equilateral triangle - Wikipedia
Equilateral triangle ... 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 ...

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: 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 Calculator
Find out what's the height, area, perimeter, circumcircle, and incircle radius of the regular triangle with this equilateral triangle calculator.

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.

Triangle équilatéral — Wikipédia
En géométrie euclidienne, un triangle équilatéral est un triangle dont les côtés ont la même longueur. Ses trois angles internes ont alors la même mesure de 60 degrés, et il constitue ainsi un polygone régulier à trois sommets. Tous les triangles équilatéraux sont semblables.

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 - Math.net
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. Recall from above that an equilateral triangle is also an isosceles triangle. Since DE≅EF, the base angles, ∠D and ∠F, are congruent.

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.

Equilateral Triangles: Properties, Formulas & Features
Learn everything about equilateral triangles, their properties, angles, formulas, and special features, explained clearly by Mathnasium tutors.