Difference between revisions of "Triangle"
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| − | A triangle is a three-sided figure | + | A triangle is a three-sided figure. |
| − | + | In Euclidean geometry, each side of a triangle is perfectly straight, and the sum of the internal angles of a triangle is always 180º. | |
A [[right triangle]] has one 90º angle. Right triangles have special properties (see [[trigonometry]]). | A [[right triangle]] has one 90º angle. Right triangles have special properties (see [[trigonometry]]). | ||
Revision as of 01:12, April 23, 2007
A triangle is a three-sided figure.
In Euclidean geometry, each side of a triangle is perfectly straight, and the sum of the internal angles of a triangle is always 180º.
A right triangle has one 90º angle. Right triangles have special properties (see trigonometry).
See: polygon