A R O and WIt has four sides. Thus area of quadrilateral ABCD. N 2 180.
Followings are the quadrilateral properties.
Length of the diagonal L2 B2 Area of Rectangle L B. A quadrilateral may be Trapezium as well or it could be a Rhombus. Area Side 1 Side 2 sin angle or A s1 s2 sin th where th is the angle between sides 1 and 2. A quadrilateral is a polygon.