# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 8.49   b = 3.16   c = 5.83

Area: T = 5.95664748803
Perimeter: p = 17.48
Semiperimeter: s = 8.74

Angle ∠ A = α = 139.7111127494° = 139°42'40″ = 2.43884191764 rad
Angle ∠ B = β = 13.92767781627° = 13°55'36″ = 0.24330681331 rad
Angle ∠ C = γ = 26.36220943437° = 26°21'44″ = 0.4660105344 rad

Height: ha = 1.40331742945
Height: hb = 3.77699208103
Height: hc = 2.0433387609

Median: ma = 1.99217893965
Median: mb = 7.1099015403
Median: mc = 5.70440007889

Inradius: r = 0.6821518865
Circumradius: R = 6.56546869643

Vertex coordinates: A[5.83; 0] B[0; 0] C[8.24404288165; 2.0433387609]
Centroid: CG[4.69901429388; 0.6811129203]
Coordinates of the circumscribed circle: U[2.915; 5.88219971046]
Coordinates of the inscribed circle: I[5.58; 0.6821518865]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 40.28988725063° = 40°17'20″ = 2.43884191764 rad
∠ B' = β' = 166.0733221837° = 166°4'24″ = 0.24330681331 rad
∠ C' = γ' = 153.6387905656° = 153°38'16″ = 0.4660105344 rad

# How did we calculate this triangle?

### 1. The triangle circumference is the sum of the lengths of its three sides ### 2. Semiperimeter of the triangle ### 3. The triangle area using Heron's formula ### 4. Calculate the heights of the triangle from its area. ### 5. Calculation of the inner angles of the triangle using a Law of Cosines    