you will need the base and the height of the traingle.the formula is 1/2 x base x height!!
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depends on the needed measurement and type of triangle.
To find the area of a triangle find the base and the height of the triangle. Then multiply the base by the height, then divide by 2. To find the perimiter of a triangle add together the outside edge of the triangle. To find the area of a triangle find the base and the height of the triangle. Then multiply the base by the height, then divide by 2. To find the perimiter of a triangle add together the outside edge of the triangle.
Area of a triangle = 0.5*base*perpendicular height
If it's a right angle triangle then the dimensions of one of its sides is also needed
Find the area of the triangle 4inch tall 3.2 base