Use the area formula: (A = frac{1}{2}bh)
Rearrange to solve for height: (h = frac{2A}{b})
Identify the base (b)
Find the area (A)
Substitute the values into (h = frac{2A}{b})
Calculate the result
If the triangle is right-angled, use the perpendicular side as the height
If the triangle is isosceles or equilateral, draw a perpendicular from the top vertex to the base and use that segment as the height