For alternative meanings, see triangle (disambiguation).

A triangle is one of the basic shapes of geometry: a polygon with three vertices and three sides which are straight line segments.

Types of triangles

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Triangles can be classified according to the relative lengths of their sides:

• In an equilateral triangle all sides are of equal length. An equilateral triangle is also equiangular, i.e. all its internal angles are equal—namely, 60°; it is a regular polygonhttp://mathworld.wolfram.com/EquilateralTriangle.html
• In an isosceles triangle at least two sides are of equal length. An isosceles triangle also has two equal internal angles (namely, the angles where each of the equal sides meets the third side). An equilateral triangle is actually also an isosceles triangle, but not all isosceles triangles are equilateral triangleshttp://mathworld.wolfram.com/IsoscelesTriangle.html
• In a scalene triangle all sides have different lengths. The internal angles in a scalene triangle are all different.http://mathworld.wolfram.com/ScaleneTriangle.html

More on [ Triangle ]

Triangle - Twitter Search

Dear Atlanta Drivers, That Triangle on your dash isn't the button for traction control when road are slick. Remember when the snow comes.
punchlinecomedy (Punchline Comedy) Wed, 06 Jan 2010 14:00:55 -0000
Dear Atlanta Drivers, That Triangle on your dash isn't the button for traction control when road are slick. Remember when the snow comes.
Trying out TriOut, the triangle-based iPhone location app. Thanks, @waynesuttonnc!
abbyladybug (Abby) Wed, 06 Jan 2010 13:59:13 -0000
Trying out TriOut, the triangle-based iPhone location app. Thanks, @waynesuttonnc!
Peopleclick, Raleigh software company, sold for $100M. (Triangle Business Journal) http://bit.ly/7bdMw9 #SITT
SciTri (ScienceintheTriangle) Wed, 06 Jan 2010 13:57:40 -0000
Peopleclick, Raleigh software company, sold for $100M. (Triangle Business Journal) http://bit.ly/7bdMw9 #SITT
RT @mvermut: @CodyBrown my pleasure. @valdiskrebs would be proud of another closed triangle.
valdiskrebs (Valdis Krebs) Wed, 06 Jan 2010 13:57:16 -0000
RT @mvermut: @CodyBrown my pleasure. @valdiskrebs would be proud of another closed triangle.
Stunning "Triangle Abacus Pendant" by @daniellejewelry: http://tinyurl.com/kpbjpb "Soft Wave Necklace" http://tinyurl.com/ny2gcp
jesseintl (Jesse International) Wed, 06 Jan 2010 13:56:15 -0000
Stunning "Triangle Abacus Pendant" by @daniellejewelry: http://tinyurl.com/kpbjpb "Soft Wave Necklace" http://tinyurl.com/ny2gcp
New to the Triangle? - Weather rules: 1 if snow is forecast don't believe it till you see it - 2 if a dusting is forecast-Could be something
dancingelephant (Dancing Elephants) Wed, 06 Jan 2010 13:56:04 -0000
New to the Triangle? - Weather rules: 1 if snow is forecast don't believe it till you see it - 2 if a dusting is forecast-Could be something

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