Five different ways to find the area of a triangle.

Thursday, November 21, 2013

How do you find the area of a triangle? The most common formula used to find the area is ½ base x height. However there are other methods you can use based on the information given. Check out the chart below for more methods to find the area of a triangle.

What you know…..

Method to use


Base and altitude of triangle

1/2 Base times Height



Altitude of triangle missing

Heron’s formula


Two sides and included angle

Side angle Side SAS


Triangle Equilateral

Equilateral Triangle Area


X and Y coordinates of the vertices

Box Method




For more information and practice problems please see

Finding the area of a triangle

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