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 ...

www.factmonster.com/ipka/A0876325.html

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 ...

www.cut-the-knot.org/triangle/Triangles.shtml

Triangle Classification: as regard the sides and the angles. Inclusive and
exclusive definitions.

www.khanacademy.org/math/geometry-home/triangle-properties/geometry-classifying-triangles/v/scalene-isosceles-equilateral-acute-right-obtuse

What I want to do in this video is talk about the two main ways that triangles are
categorized. The first way is based on whether or not the triangle has equal sides
...

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
...

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 ...

www.mathopenref.com/triangle.html

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 ...

www.mathwarehouse.com/geometry/triangles/triangle-types.php

How Triangles are classifed as well as defining traits of each type of type.

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

In this educational animated movie about Math learn about equilateral, isosceles,
scalene, acute, obtuse, right, and the hypotenuse.

www.sheppardsoftware.com/mathgames/geometry/shapeshoot/triangles_shoot.htm

Learn about triangles the fun way in this Triangle Shoot Geometry Math Game.