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Triangle Calculator — Sides, Angles, Area & Perimeter

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Calculated result

Area 12

Perimeter: 16

Semiperimeter: 8

Angles: A 53.1301°, B 53.1301°, C 73.7398°

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  1. 1. s = (5 + 5 + 6) ÷ 2 = 8.
  2. 2. Area = √(s(s−a)(s−b)(s−c)) = 12.
  3. 3. Law of cosines gives the three angles.

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