# Difference between revisions of "Triangle"

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(each side of a triangle is perfectly straight) |
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− | A triangle is a three-sided figure. In geometry, each side of a triangle is perfectly straight. The sum of the internal angles of a triangle is always 180<sup>o</sup>. | + | A triangle is a three-sided figure. In geometry, each side of a triangle is perfectly straight. |

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+ | The sum of the internal angles of a triangle is always 180<sup>o</sup>. | ||

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+ | A [[right triangle]] has one 90<sup>o</sup> angle. Right triangles have special properties (see [[trigonometry]]). | ||

See: [[polygon]] | See: [[polygon]] | ||

[[Category:Geometry]] | [[Category:Geometry]] |

## Revision as of 16:26, 18 April 2007

A triangle is a three-sided figure. In geometry, each side of a triangle is perfectly straight.

The sum of the internal angles of a triangle is always 180^{o}.

A right triangle has one 90^{o} angle. Right triangles have special properties (see trigonometry).

See: polygon