Contents
The publication presents online calculators and formulas for calculating the area of a convex quadrilateral using various input data: through the diagonals and the angle between them, on all sides (if a circle can be described around), along the semi-perimeter and the radius of the inscribed circle.
Content
Area calculation
Instructions for use: enter the known values, then press the button “Calculate”. As a result, the area of the figure will be calculated taking into account the specified data.
1. Through the diagonals and the angle between them
Calculation formula
2. On all sides (Brahmagupta formula)
Note: If a circle can be circumscribed around a quadrilateral.
Calculation formula
p is the semiperimeter of a quadrilateral, equals:
3. Through the semiperimeter and the radius of the inscribed circle
Calculation formula
S = p ⋅ r