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
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