# MathGloss/A/Area of triangle

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## Defintion

The area of a triangle can be found by multiplying the base times the one-half the height.The area of a triangle can be calculated in three ways. The most common expression for the area of a triangle is one-half the product of the base and the height (1/2AH). The height is formally called the altitude, and is equal to the length of the line segment with one endpoint at a vertex and the other endpoint on the line that contains the side opposite the vertex. Like all altitudes, this segment must be perpendicular to the line containing the side.

## Examples

The area of triangle that its bas 10 cm and hight 4cm is [math]1/2AH = 1/2 *10*4 =20 [/math] cm
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