All quadrilaterals are 4 sided shapes
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since a quadrilateral is 2D .hence it has no volume..............
The formula for the area of a quadrilateral is... BASE*HEIGHT/3
A quadrilateral has 4 sides but may not be symmetric. Bretschneider's formula provided a method using side lengths and two opposite angles. Any scalene quadrilateral can be divided into four triangles and the area is the sum of their areas. (see the related link below)
Because it complies with the formula: (n-2)*180 = sum of interior angles A quadrilateral has 4 sides and so: (4-2)*180 = 360 degrees
To comply with the formula for any polygon (number of sides-2)*180 = total sum of interior angles. A quadrilateral has 4 sides so: (4-2)*180 = 360 degrees