Brahmagupta's Formula
This calculator uses a special case of Brahmagupta's Formula for use with cyclic quadrilaterals. A cyclic quadrilateral is a type of quadrilateral whose end points can form a circle. The formula used is:
Area = sqrt[(s-a)(s-b)(s-c)(s-d)]Where:
- a = side length
- b = side length
- c = side length
- d = side length
- s = semiperimeter = (a+b+c+d)/2
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