Difference between revisions of "Triangle"
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A triangle is a three-sided figure. In geometry, each side of a triangle is perfectly straight. | 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 | + | The sum of the internal angles of a triangle is always 180º. |
| − | A [[right triangle]] has one | + | A [[right triangle]] has one 90º angle. Right triangles have special properties (see [[trigonometry]]). |
See: [[polygon]] | See: [[polygon]] | ||
[[Category:Geometry]] | [[Category:Geometry]] | ||
Revision as of 01:03, April 23, 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 180º.
A right triangle has one 90º angle. Right triangles have special properties (see trigonometry).
See: polygon