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Equilateral triangle


In geometry, an equilateral triangle is a triangle in which all three sides are equal. In the familiar ..... A triangle is equilateral if and only if any three of the smaller triangles have either t...

Triangles - Equilateral, Isosceles and Scalene - Math is Fun


A triangle has three sides and three angles. The three angles ... Equilateral, Isosceles and Scalene ... Sometimes a triangle will have two names, for example:  ...

Identifying Scalene, Isosceles, and Equilateral Triangles - For ...


image0.jpg. In addition to having three unequal sides, scalene triangles have three unequal angles. ... The above figure shows an example of a scalene triangle.

Triangle Classification


A triangle with all three equal sides is called equilateral. S. Schwartzman's ... It follows that a triangle may have at most one obtuse or even right angle. (This also ...

Area of an equilateral triangle - Math Open Reference


A method of calculating the area of an equilateral triangle using a simplified formula.

Equilateral Triangle Formula | Formula for Equilateral Triangle ...


Solved Examples. Question 1: Find the area, altitude, perimeter and semi- perimeter of an equilateral triangle whose side is 7 cm ? Solution: Side of an ...

Triangle Types and Classifications: Isosceles, Equilateral, Obtuse ...


The Equilateral triangle shown on the left has three equal sides and three equal ... an obtuse triangle can only have one angle that measures more than 90°.

Isosceles & equilateral triangles problems - Khan Academy


Three example problems involving isosceles and equilateral triangles (partly taken from Art of Problem Solving, by Richard Rusczyk). Created by Sal Khan.

Isosceles & equilateral triangles problems - Khan Academy


Three example problems involving isosceles and equilateral triangles (partly taken ... necessarily equal to the other two) are congruent/have the same measure.

Equilateral Triangle -- from Wolfram MathWorld


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, ...

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What is an Equilateral Triangle? - Definition, Properties & Formula ...


In this lesson, you'll discover what equilateral triangles are and the properties they have that make them unique. You'll also learn two formulas...

Equilateral Triangles - Vitutor


Equilateral triangle, definition, perimeter, area, height and apothem of an equilateral triangle, formulas, examples, exercises and problems with solutions.

Types of Triangles (examples, solutions, videos)


Triangles are polygons that have three sides, three vertices and three angles. ... Some examples are equilateral triangles, isosceles triangles and scalene ...