How Do You Calculate The Area Of Quadrilaterals & Diagonals?
A quadrilateral is any geometric figure with four sides. There are three general types of quadrilaterals: those with no parallel sides; those with just one pair of parallel sides (trapezoids); and those with two pairs of parallel sides (parallelograms). There are shortcut formulas for finding the area of trapezoids and parallelograms; if the quadrilateral has no parallel sides at all, however, there is no shortcut and you must compute its area by dividing it into two triangles along one of its diagonals and determining the area of each triangle. Draw a diagonal line between any two opposite corners of the quadrilateral, creating two triangles. Designate one triangle as A and the other as B. Measure the length of all three sides of triangle A. Do the same for triangle B. Add together the lengths for all three sides of triangle A and divide by 2. The result is called the semiperimeter. If triangle A has sides of lengths 3 inches, 5 inches, and 6 inches, for instance, the semiperimeter wo
