Coolidge's formula (area of a general convex quadrilateral)
Description
A quadrilateral is a polygon with four sides (or edges) and four vertices or corners. Coolidge’s formula calculates the area of a general convex quadrilateral of the sides, the semiperimeter and the lengths of the diagonals of the quadrilateral.
Related formulasVariables
| A | The Area of the quadrilateral (m2) |
| s | The semiperimeter of the quadrilateral (a+b+c+d)/2 (m) |
| a | Side of the quadrilateral (m) |
| b | Side of the quadrilateral (m) |
| c | Side of the quadrilateral (m) |
| d | Side of the quadrilateral (m) |
| p | One of the diagonals of the quadrilateral (m) |
| q | The other giagonal of the quadrilateral (m) |