Lets suppose the length of three sides is a b and c. Some special Pythagorean numbers. Since the area of a triangle is ab sin C where C is the angle between sides a and b you can use this formula twice once for each of your imaginary triangles to get the total area of the quadrilateral.
Squares and Rectangles are special types of parallelograms.
Diagonal S umof theheightof twotriangles Area of quadrilateral ABCD. ½ 45 ½ 2010. Compare how these concepts apply to quadrilaterals. Squares and Rectangles are special types of parallelograms.
