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## Triangles - Equilateral, Isosceles and Scalene - Math is Fun

www.mathsisfun.com/triangle.html

Equilateral, Isosceles and Scalene. There are three special names given to triangles that tell how many sides (or angles) are equal. There can be 3, 2 or no ...

## Definition of a Triangle

www.geom.uiuc.edu/~wanous/definitionofatriangle.html

Examples of Triangles. A triangle is a special kind of shape. What do you think makes a shape a triangle? Be sure to think about this question before going on ...

## Triangle -- from Wolfram MathWorld

mathworld.wolfram.com/Triangle.html

A triangle is a 3-sided polygon sometimes (but not very commonly) called the trigon. Every triangle has three sides and three angles, some of which may be the  ...

## Chapter 6: The triangle and its properties | Grade 7 (NCERT) | Khan ...

Here we will learn two special types of triangles: Equilateral and Isosceles. A triangle in which all the three sides are of equal lengths and the measure of each  ...

## Types of Triangles - BrainPOP

www.brainpop.com/math/geometryandmeasurement/typesoftriangles/

Triangles abound in this BrainPOP triangle movie! In it, Tim and Moby introduce you to one of the sharpest shapes around. You'll find out exactly what a triangle ...

## Triangles | Geometry | Khan Academy

You probably like triangles. You think they are useful. They show up a lot. What you'll see in this topic is that they are far more magical and mystical than you ...

## Polygons - Triangles - First Glance - Math.com

www.math.com/school/subject3/lessons/S3U2L2GL.html

As you learned in the last lesson, a triangle is the simplest polygon, having three sides and three angles. The sum of the three angles of a triangle is equal to 180 ...

## Classifying triangles 1 | Triangle types | Khan Academy

Sal categorizes triangles as scalene, isosceles, equilateral, acute, right, or obtuse .

## Identify triangles by side lengths | Triangle types | Triangles ...

Practice identifying triangles by their side-lengths as equilateral, isosceles, or scalene.

## Find angles in triangles | Triangle angles | Equations and geometry ...

Find missing angle measures in triangles using the properties of general triangles, isosceles triangles, and equilateral triangles.

'Younger' star Nico Tortorella talks love triangles
Entertainment Weekly Online · 6 hours ago

### Triangles - Fact Monster

www.factmonster.com

Triangles. A triangle has three sides and is made of straight lines. A triangle may be classified by how many of its sides are of equal length. Or, it may be ...

### Cool math .com - Types of Triangles

www.coolmath.com

Definitions and formulas for triangles including right triangles, equilateral triangles, isosceles triangles, scalene triangles, obtuse triangles and acute triangles.

### Triangle definition and properties - Math Open Reference

www.mathopenref.com

Altitude, The altitude of a triangle is the perpendicular from the base to the opposite vertex. (The base may need to be extended). Since there are three possible ...