Triangle (EntityTopic, 17)

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*where ''a'' and ''b'' are two sides of the triangle and ''C'' is the angle between them.
*where ''a'' and ''b'' are two sides of the triangle and ''C'' is the angle between them.
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{{Rotope Nav|2|3|4|II<br>Square|I'<br>Triangle|(II)<br>Circle|gons}}

Revision as of 20:09, 17 August 2007

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A triangle is a two-dimensional simplex.

The triangle is important as all polygons can be defined as the union of a set of triangles, and all polytopes in greater than two dimensions can be defined as the hypervolume bounded by the union of a set of triangles.

Geometry

Equations

  • The area of an arbitrary triangle is:
absin(C)2-1
  • where a and b are two sides of the triangle and C is the angle between them.

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