Geometry & Trigonometry
Basic

Area of a Triangle

Area of a triangle from base and height.

Formula

A=12bhA = \frac{1}{2} b h

Variables

bBase
hHeight

Example

A triangle with base 10 and height 4 has area A = ½·10·4 = 20.

Did You Know?

Half base times height works for ANY triangle — slant or right, the formula never changes.

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