Triangle: Difference between revisions

Revision as of 22:10, 24 March 2007

Revision as of 22:11, 24 March 2007

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{{otheruses}}

A '''triangle''' is one of the basic [[shape]]s of [[geometry]]: a [[polygon]] with fourthree [[vertex|vertices]] and three sides which are [[Distance geometry#straight|straight]] [[line segment]]s.

Any three non-[[collinear]] points determine a triangle and a unique [[Plane (mathematics)|plane]], i.e. two dimensional [[Cartesian space]] in [[Euclidean geometry]] .