# Triangle calculator SSS - result

### Obtuse scalene triangle.

Sides: a = 15.79   b = 13.4   c = 28.79

Area: T = 34.54221311444
Perimeter: p = 57.98
Semiperimeter: s = 28.99

Angle ∠ A = α = 10.31658306167° = 10°18'57″ = 0.18800452093 rad
Angle ∠ B = β = 8.74110568358° = 8°44'28″ = 0.15325602219 rad
Angle ∠ C = γ = 160.9433112548° = 160°56'35″ = 2.80989872224 rad

Height: ha = 4.37551907719
Height: hb = 5.15655419619
Height: hc = 2.4399592299

Median: ma = 21.02109663194
Median: mb = 22.23107017433
Median: mc = 2.68881266711

Vertex coordinates: A[28.79; 0] B[0; 0] C[15.60766029871; 2.4399592299]
Centroid: CG[14.79988676624; 0.87998640997]
Coordinates of the circumscribed circle: U[14.395; -41.67216623239]
Coordinates of the inscribed circle: I[15.59; 1.19215188391]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 169.6844169383° = 169°41'3″ = 0.18800452093 rad
∠ B' = β' = 171.2598943164° = 171°15'32″ = 0.15325602219 rad
∠ C' = γ' = 19.05768874525° = 19°3'25″ = 2.80989872224 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    