Base b 20. To find the area of an equilateral triangle we can use the Pythagorean Theorem to get the height of the triangle and then use formula A 1 2 b h or we can use the following formula. To find the area of a triangle we take one half of its base multiplied by its height.
A trapezoid is lesser known than a triangle but still a common shape.
Base b 20. The area of a triangle is equal to half of multiplied the base by the height. Definitions and formulas for the area of a triangle the sum of the angles of a triangle the Pythagorean theorem Pythagorean triples and special triangles the 30-60-90 triangle and the 45-45-90 triangle Just scroll down or click on what you want and Ill scroll down for you. This is the most commonly used formula to calculate the area of the triangle.