How It Works
Heron: area=sqrt(s(s−a)(s−b)(s−c)), s=perimeter/2. Angles use the law of cosines.
Reference Sources
FAQs
How does this calculator work?
Heron: area=sqrt(s(s−a)(s−b)(s−c)), s=perimeter/2. Angles use the law of cosines.
What assumptions should I check?
Check the units and definitions shown beside each input. Results use the values you enter.