If the diagonal and the length of the perpendiculars from the vertices are given then the area of the quadrilateral is calculated as. The calculation is done as follows. The quadrilateral having one pair of opposite sides parallel to each other is called a trapezium.
There are five formulas that you can use to calculate the area of the seven special quadrilaterals.
Area 05 Side 1 Side 4 sin Side 14 angle 05 Side 2 Side 3 sin Side 23 angle or. A r e a o f r h o m b u s 4 a r e a o f o n e t r i a n g l e Area of rhombus 4left area of one triangle right Areaof rhombus 4 areaof onetriangle 4 1 2 A C 2 B D 2 4left frac 1 2times frac AC 2times frac BD 2 right 421. Area of a general Quadrilateral frac12diagonalSum of the height of two triangles Area of quadrilateral ABCD frac12 h_1 h_2 where. The height is the vertical distance between the bases which is the difference of the -coordinates.