Triangle: Difference between revisions

Revision as of 22:11, 24 March 2007

Revision as of 02:38, 27 March 2007

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* A '''[[Special right triangles|right triangle]]''' (or '''right-angled triangle''', formerly called a '''rectangled triangle''') has one 90° internal angle (a [[angle|right angle]]). The side opposite to the right angle is the [[hypotenuse]]; it is the longest side in the right triangle. The other two sides are the ''legs'' or '''catheti''' (singular: '''[[wiktionary:cathetus|cathetus]]''') of the triangle.

* An '''obtuse triangle''' has one internal angle larger than 90° (an [[angle|obtuse angle]]).