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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 180<sup>o</sup>.
The sum of the internal angles of a triangle is always 180º.
A [[right triangle]] has one 90<sup>o</sup> angle. Right triangles have special properties (see [[trigonometry]]).
A [[right triangle]] has one 90º angle. Right triangles have special properties (see [[trigonometry]]).
See: [[polygon]]
See: [[polygon]]
[[Category:Geometry]]
[[Category:Geometry]]