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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 ...

Triangle definition and properties - Math Open Reference

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 ...

Triangles - Fact Monster

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 ...

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 ...

Classifying triangles 1 | Triangles | Khan Academy

www.khanacademy.org/math/basic-geo/basic-geo-shapes/basic-geo-classifying-shapes/v/scalene-isosceles-equilateral-acute-right-obtuse

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

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 ...

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 ...

Triangle Splat - Geometry: Math Games - Sheppard Software

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

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

Cynthia Lanius' Lessons:Impossible Triangles

math.rice.edu/~lanius/Geom/Imposs/

Determine why the triangles below could not be drawn as indicated. Select the rule that each one violates. Note: Angle measures are in degrees.

triangle() \ Language (API) \ Processing 2+

processing.org/reference/triangle_.html

Jul 30, 2016 ... Description, A triangle is a plane created by connecting three points. The first two arguments specify the first point, the middle two arguments ...

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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 -- from Wolfram MathWorld

mathworld.wolfram.com

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  ...

Find angles in triangles | Working with triangles | Congruence ...

www.khanacademy.org

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